Environmental Studies
Final Exam Questions
Course Introduction
Environmental Studies is an interdisciplinary course that explores the dynamic relationships between humans and the natural environment. It examines the scientific principles underlying environmental processes, the impact of human activity on ecosystems, and the socio-economic and political factors influencing environmental policy and sustainability. Students will engage with topics such as climate change, biodiversity, resource management, pollution, and environmental ethics, while developing critical thinking skills to assess and address complex environmental issues in both local and global contexts.
Recommended Textbook
Scientific American Environmental Science For A Changing World 3rd Edition by Susan Karr
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Chapter 1: environmental Literacy and Sustainability
Lessons From a Vanished Society
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Sample Questions
Q1) A final speaker acknowledges that wind turbines have problems but suggests that the advantages outweigh the disadvantages.The area suffers from acid rain and particulate air pollution that is linked to a nearby coal-fired power plant.These wind turbines will decrease the amount of coal that must be burned,and this will reduce air pollution.Though some animals may unfortunately be killed,the wind instillation will help the ecosystem as a whole,he argues,making it healthier for the plants and animals that live there.His argument addresses concerns of those with _____ point of view.
A)an anthropocentric
B)an ecocentric
C)a biocentric
D)both an anthropocentric and ecocentric
E)both an anthropocentric and biocentric
Answer: D
Q2) What does an environment include?
Answer: An environment includes the biological (living)and physical (nonliving)surroundings in which any given living organism exists.
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Chapter 2: Science Literacy and the Process of Science
Fungal Attacker Threatens North American Bats
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Sample Questions
Q1) In this chapter it has been made clear that the process used to obtain a body of knowledge (facts and explanations)is more important than the body of knowledge itself.Why is this?
Answer: Facts may change as additional information is collected through the scientific process.Consequently,it is important that the entire process be open-ended and that the investigators be open-minded to change.
Q2) In terms of manipulating variables,what is the difference between an observational study and an experimental study? Which type of study can test cause-and-effect relationships?
Answer: In an observational study,data are gathered in a real-world setting,without intentionally manipulating any variable.This can lead to correlative conclusions.In an experimental study,the independent variable is manipulated by the researcher to evaluate a cause-and-effect relationship.
Q3) How would you respond to someone who says,"Evolution is just a theory"?
Answer: The word "theory" in casual usage means "an idea." In contrast,a "scientific theory" is a very well-supported hypothesis with strong predictive powers.It is very likely not going to be refuted by additional studies.
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Chapter 3: Information Literacy and Toxicology Lead in the Water
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Sample Questions
Q1) Carefully weighing the risks and benefits associated with any chemical is known as
A)innocent until proven guilty
B)guilty until proven innocent
C)the precautionary principle
D)do no harm
E)risk assessment
Answer: E
Q2) Which of the following are components of a critical thinker's skill set?
A)be skeptical
B)evaluate the evidence
C)be open minded
D)watch out for biases
E)All of these answers are correct.
Answer: E
Q3) An antagonistic effect is seen when ____________________.
A)human cells are exposed to both thimerosal and aluminum hydroxide
B)rats are given both lead and cadmium
C)mice are given both lead and arsenic
Answer: C
Page 5
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Chapter 4: Ecosystems and Nutrient Cycling Engineering
Earth
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Sample Questions
Q1) Denitrifying bacteria convert nitrate into ________,thus returning nitrogen to
A)ammonia; its most stable form
B)nitrogen gas; the atmosphere
C)proteins; a usable form
D)ammonia; its least stable form
E)nitrogen gas; the soil
Q2) A plant harnessing solar energy from the Sun is an example of which of the following?
A)nutrient cycling
B)community interactions
C)energy flow
D)biomass
E)terrestrial radiation
Q3) In terms of the carbon cycle,how is combustion of fossil fuels different from burning biomass (wood)for fuel?
Q4) Describe the two main goals of the Biosphere 2 experiment.Was the experiment a success or a failure?
Q5) If no new matter enters the system,how can Earth continue to exist?
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Chapter 5: Population Ecology Gray Wolves Return to Yellowstone
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Sample Questions
Q1) Why is it ultimately better for a population to have some resistance factors (that is,factors that reduce a population's size)?
Q2) What is an example of top-down regulation?
A)availability of sunlight
B)control of a prey population by a predator
C)large amounts of food
D)drought killing young willow trees
E)none of these answer choices are correct
Q3) You would expect the snowshoe hare to have a _________biotic potential.
A)high
B)low
Q4) Which of the following factors affecting the human population is not density dependent?
A)starvation
B)aggressive behavior
C)disease
D)forest fires
Q5) The snowshoe hare would most likely have which kind of population growth?
A)Exponential
B)Logistic
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Chapter 6: Community Ecology the Florida Everglades: a Community in Cris
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Sample Questions
Q1) Owls hunt for field mice in a field at night.Foxes hunt for field mice in the same field during the day.The term that best describes the interaction between the owls and the foxes is ________________.
A)mutualism
B)commensalism
C)parasitism
D)resource partitioning
E)predation
Q2) The process by which one community replaces another is known as ________________.
A)species regression
B)ecological succession
C)successive diversification
D)pioneer colonization
E)ecological replacement
Q3) What is a niche generalist,and what advantage do they have over a niche specialist?
Q4) Why are invasive species so damaging to ecosystems?
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Q5) Why are decomposers and detritivores essential members of any ecosystem?
Chapter 7: evolution and Extinction a Tropical Murder
Mystery
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Sample Questions
Q1) For coevolution to occur,which of the following must happen between two species?
A)natural selection
B)successful reproduction of each species
C)each provides selective pressure for traits in the other
D)each affects the differential survival and reproductive success of the other
E)all of these answer choices are correct
Q2) The background rate of extinction describes the ___________.
A)average amount of time a species has before extinction
B)amount of time it takes for a similar species to become extinct
C)average rate of extinction in the time periods between mass extinctions
D)length of a given mass extinction
E)average rate of extinction after human impact on the environment
Q3) The most famous major extinction event that occurred on Earth was the _________ extinction,which resulted in the extinction of the dinosaurs.
A)Ordovician
B)K-T boundary mass
C)Devonian
D)Permian
E)Triassic
Q4) What are four observations that natural selection is based on?
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Chapter 8: Biodiversity Palm Oil Plantations Threaten
Tropical Forests
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Sample Questions
Q1) Since Hawaii has a large number of plant and animal species compared to other regions,you would say they have ____________ biodiversity.
A)high
B)low
C)no
Q2) Why must certified sustainable palm oil plantations be required to minimize their use of fire and pesticides?
A)Fire and pesticides decrease the genetic,species,and ecosystem diversity of the local ecosystem.
B)Fire and pesticides kill the palm trees,causing the farmers to replant the trees every year.
C)Fire and pesticides make the palm oil taste bad.
D)Fire and pesticides may cause harm to plantation workers.
E)Certified sustainable palm oil plantations are not restricted in their use of fire and pesticides.
Q3) What is the connection between endemic species and endangered species?
Q4) How do palm oil plantations,a lucrative business,still decrease ecosystem services of the local ecosystems?
10
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Chapter 9: Preserving Biodiversity a Forest Without Elephants
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Sample Questions
Q1) How many African elephants were estimated killed in 2011 alone?
A)35,000
B)40,000
C)325,000
D)1 million
E)50
Q2) You are working with the Red Wolf,a critically endangered species in the southeastern United States.Your conservation strategy is to establish a Species Survival Plan to use a captive breeding program to increase the population numbers.The ultimate goal of this plan would be to
A)restore the habitat of the red wolf.
B)increase legal protections for the red wolf.
C)release more red wolves into the wild.
D)create protected areas for the red wolf.
Q3) Which of the following groups has the highest proportion of data deficient species?
A)amphibians
B)lobsters
C)groupers
D)sharks and rays
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Chapter 10: Human Populations the Kerala Model
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Q1) Why would airlifting crates of condoms and dropping them over African countries with high total fertility rates not be a successful strategy at slowing global population growth rates? What factors need to be considered,beyond making contraceptives available?
Q2) Why were population control measure taken by leaders of China and India in past years unsuccessful?
Q3) The global replacement fertility rate is approximately 2.33 children per woman.Why is this value higher than the 2.1 replacement fertility rate in the United States? If the current global total fertility rate (TFR)of 2.5 were brought down to 2.33,would that be enough to allow for sustainable existence of humans on Earth? What others factors must we also consider?
Q4) How does overconsumption in developed countries,such as the United States,affect countries in other regions,such as Asia?
Q5) Cultural and economic forces that encourage women to have more children are called __________.
A)pronatalist pressures
B)population momentum
C)total fertility rates
D)demographic transitions
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Chapter 11: Urbanization and Sustainable Communities
Creating Green Cities
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Q1) Which urban planning term is correctly matched to what it represents?
A)green buildings - a strategy that helps create walkable communities with lower ecological footprints
B)infill development - construction and operation designs that promote resource and energy efficiency
C)urban growth boundaries - the development of empty lots within a city
D)Leadership in Energy and Environmental Design - a certification program awarding a rating to buildings that include environmentally friendly sound design features
E)green roofs - rooftop-installed energy production using such technologies as solar panels or wind turbines to reduce fossil fuel use
Q2) The phenomenon of the spread of low population-density development across the landscape is referred to as________________.
A)urban flight
B)suburban sprawl
C)zoning
D)infill development
E)new urbanism
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Chapter 12: Environmental Health Eradicating a Parasitic Nightmare
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Sample Questions
Q1) Which prevention action is likely to have the greatest effect on reducing the death rate in less developed countries?
A)diet
B)clean water
C)exercise
D)strict industrial pollution regulations
E)regular medical checkups
Q2) The leading environmental threat overall is ___________.
A)air pollution
B)water pollution
C)climate change
D)radiation
E)infectious agents
Q3) How does climate change affect environmental hazards?
A)increases clean water supplies
B)decreases extreme weather conditions
C)decreases the range of pathogens
D)increases the range of vectors
E)decreases air pollution
Q4) How might washing your hands lead to a human health threat?
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Chapter 13: ecological Economics and Consumption Wall to
Wall, Cradle to Cradle
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Q1) A(n)________ for a country is the amount of land needed to provide its resources and assimilate its waste.
A)circular system
B)external cost
C)ecological footprint
D)ecolabel
E)ecosystem service
Q2) Compare and contrast technology as a variable that increases and decreases a population's overall impact.
Q3) Harvesting wood sustainably will reduce air and water pollution,and as a result it will
A)reduce the internal costs of doing business
B)decrease the price of their furniture because the wood will be cheaper
C)internalize some of the negative external costs of making furniture
D)convert some of the company's internal costs to external costs
Q4) Your company is in the process of developing an alternative to carpet tile.To make your product more desirable and profitable,what correct costs of manufacturing carpet tiles should your designers focus on and why?
Q5) What are assumptions of mainstream economics that fall short?
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Chapter 14: environmental Policy the World Tackles Ozone
Depletion
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Sample Questions
Q1) With fewer O<sub>3</sub> molecules in the stratosphere,how much UV-B radiation reaches the surface of Earth?
A)0%
B)0 to 5%
C)5% to 10%
D)more than 10%
Q2) How do political lobbyists influence the policy making process?
A)Lobbyists review sound science and use the results to propose policy.
B)Lobbyists contact elected officials in support of a particular position.
C)Lobbyists only work for industry corporations to support bills that will benefit the corporations.
D)Lobbyists only support regulation of toxic substances to help the environment.
E)Lobbyists for the chemical industry govern the decisions of the EPA.
Q3) What is an environmental policy? Why are many environmental problems considered "wicked problems"?
Q4) A federal highway project is proposed to connect two existing stretches of interstate.What signature feature of the National Environmental Policy Act (NEPA)must be met prior to construction of the highway?
Q5) Why is the term "ozone hole" misleading?
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Chapter 15: managing Solid Waste a Plastic Surf
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Q1) Why can't we permanently get rid of the waste we generate?
A)It is illegal to dump waste in the oceans.
B)Most states prohibit the burning of waste.
C)It would violate the law of conservation of matter.
D)Disposal costs are prohibitive.
E)None of the choices above fit the description.
Q2) __________ is harmful to humans; it is toxic,flammable,corrosive,explosive,and/or radioactive.
A)biodegradable waste
B)sanitary landfill waste
C)municipal waste
D)hazardous waste
E)industrial waste
Q3) What are the characteristics of something that is nondegradable?
A)It does not degrade in normal atmospheric conditions.
B)It is mostly synthetic molecules.
C)It is chemically stable.
D)It cannot be broken down by naturally occurring enzymes.
E)All of these choices are characteristics.
Q4) What everyday changes can you make to reduce the amount of waste you produce?
Page 17
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Chapter 16: Freshwater Resources Toilet to Tap
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Sample Questions
Q1) Which of the following would reduce the amount of infiltration of water into an aquifer?
A)paved roads
B)monoculture lawns
C)cement driveways
D)buildings
E)All of these answer choices are correct.
Q2) How many more gallons of water does it take to produce a pair of blue jeans than a cotton T-shirt?
A)2,100
B)1,440
C)660
D)350
Q3) How much less water do newer Energy Star washing machines use compared with older models?
A)10%
B)25%
C)50%
D)75%
E)90%
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Chapter 17: Water Pollution Suffocating the Gulf
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Q1) What percentage of U.S.waters meet the fishable/swimmable goal for pathogens in recreational waters today?
A)25
B)56
C)65
D)80
E)100
Q2) What can trigger the process of eutrophication?
A)hot water discharged into a body of water
B)an excess of nutrients discharged into the water
C)oil rigs operating in the ocean
D)too many fish in a body of water
E)too much dissolved oxygen in the water
Q3) What could be the effects of runoff and land use in the watershed that feeds the waters at the beach?
A)Water quality and quantity could both be affected.
B)Water quality but not quantity could be affected.
C)Water quantity but not quality could be affected.
D)Neither water quality nor quantity could be affected.
Q4) Why should we care about water pollution?
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Chapter 18: marine Ecosystems Ocean Acidification: the
Other Co2 Problem
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Q1) In 2006,commercial fishing was prohibited in the marine protected area of the South Pacific coral reefs of the Republic of Kirbati's Kanton Island.What was the effect of this?
A)Fishermen lost their jobs and went bankrupt.
B)The fish in the reef died off anyway.
C)The reef began to recover from a bleaching event.
D)The corals were stressed further and more of them died.
E)Algae began growing on the corals and took over the area.
Q2) What are the causes of algal blooms,and how do algal blooms affect coral reefs?
Q3) A pH drop of 0.1 corresponds to a ____ increase in ocean water acidity.
A)10%
B)20%
C)30%
D)40%
E)50%
Q4) You would expect to find barnacles,starfish,and mussels in which ocean zone?
A)abyssal
B)hadal
C)bathypelagic
D)intertidal
Page 20
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Chapter 19: Forests Returning Trees to Haiti
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Sample Questions
Q1) Why does forest conservation in countries that are more developed not make a significant difference in worldwide conservation efforts?
A)Nations that are more developed still demand wood,driving deforestation elsewhere.
B)Multinational corporations simply move their businesses to less-developed nations where deforestation regulations do not exist.
C)Deforestation in countries that are more developed offsets gains in less-developed countries.
D)Both because nations that are more developed still demand wood and because multinational corporations move their businesses to less-developed nations with fewer deforestation regulations.
E)All of these answer choices are correct.
Q2) The majority of deforestation is currently taking place _______________.
A)in countries that are more developed
B)in countries that are less developed
C)at the same rate in both developed and developing countries
D)at rates that vary worldwide,with no pattern
E)The data to determine this are insufficient.
Q3) Why might forest management be considered a "wicked problem"?
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Chapter 20: soil Resources and Grasslands Restoring the Range
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Q1) What is the main use of grasslands today by humans?
A)for recreational use
B)growing food for humans
C)as a food source for large grazing animals
D)for energy production
E)for housing construction
Q2) Humans rely upon grasslands to graze domestic livestock.How would degradation of grasslands impact grazing,and what affect would this have on humans?
Q3) Which types of grasslands are characterized by ultra-thin layers of soil and very short growing seasons?
A)cold
B)temperate
C)savanna
D)prairie
E)rangeland
Q4) How does undergrazing reduce the biodiversity of grasslands?
Q5) How do the grazing patterns of wild herbivores make the lands healthier than those grazed by cattle?
Q6) How does overgrazing lead to soil erosion?
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Chapter 21: Mineral Resources No Stone Unturned
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Q1) You tell Sarah about different mining techniques,including the one which is usually used to mine rare earth roes used in making new cell phones.This technique is called __________ mining.
A)strip
B)open-pit
C)placer
D)subsurface
Q2) __________ is the study of Earth's structure and the processes that shape it.
A)Biology
B)Chemistry
C)Physics
D)Engineering
E)Geology
Q3) The most abundant minerals on Earth include:
A)feldspar
B)europium
C)neodymium
D)copper
E)zinc
Q4) Describe how geologists help determine the location of mineral deposits.
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Chapter 22: Feeding the World a Gene Revolution
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Q1) Why are low-tech farming methods more accessible to female farmers?
Q2) Why are many European countries opposed to the use of GMOs?
Q3) Efforts from the Green Revolution resulted in _________.
A)enough food to feed every human on Earth
B)every human on Earth being fed a life-sustaining diet
C)less food produced than usual
D)the end of food insecurity
E)the end of malnutrition
Q4) What is another low-tech farming method employed by some farms in Africa?
A)herbicide-resistant crops
B)use of synthetic nitrogen fertilizer
C)growing only cash crops
D)planting trees around the farm plot
E)diverting rivers to flow through farm plots
Q5) What are cash crops?
A)only illegal crops like coca for cocaine
B)crops like high quality cotton sold for higher profits than normal
C)only food crops like coffee
D)crops only grown for export
E)any food and fiber crops grown for profit instead of use
Page 24
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Chapter 23: sustainable Agriculture: Raising Crops Farming
Like an Ecosystem
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Q1) In monoculture,the crops grown are usually _______.
A)a mix of plants
B)different each season
C)self-fertilizing
D)drought tolerant
E)the same single crop every year
Q2) An increase in crop genetic diversity is an advantage of what kind of farming?
A)sustainable
B)commercial
C)global
D)industrial
E)All farming decreases genetic diversity.
Q3) What advantage do Janis and John have planting perennial wheat instead of annual wheat?
A)a higher profit
B)using more herbicides
C)replanting every year
D)reduced irrigation
Q4) What is organic agriculture? Explain how it is similar to and different from sustainable agriculture,using livestock production as an example.
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Chapter 24: Agriculture: Raising Livestock Can Meat Be Part of a Healthy, Environmentally Conscious Diet
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Q1) Which of the following is NOT a benefit of grass-fed beef?
A)Animal sickness is less of a problem.
B)The meat has more omega-3 fatty acids.
C)There is a reduced need for antibiotics.
D)The animals gain weight nearly as rapidly as feedlot animals do.
Q2) Which of the following is LEAST efficient and slowest at converting the food it eats into body mass?
A)CAFO-reared cattle
B)grass-fed cattle
C)chickens
D)pigs
E)salmon
Q3) Affluence is best described as _____.
A)diet
B)wealth
C)poverty
D)consumption
E)demand
Q4) What are some advantages and disadvantages to feeding cattle grains instead of grass?
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Chapter 25: Fisheries and Aquaculture Fish in a Warehouse
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Q1) Why would Seabiscuit stop using bottom trawlers to be more sustainable?
A)They have less bycatch than other methods.
B)They catch fewer fish than other methods.
C)They destroy seabeds and impact more species than targeted fish.
D)They aren't as profitable as using other fishing methods.
Q2) A benefit of Seabiscuit using traditional outdoor aquaculture is __________.
A)they can control the wild fish population by using them to feed the farmed fish
B)large amounts of fish can be harvested for food
C)large amounts of waste from the net pens can fertilize aquatic plants in the area
D)genetically modified species can be released into the wild to spread new genes
Q3) The Magnuson-Stevens Fishery Conservation and Management Act is the primary law in the United States that governs marine fisheries.The act and subsequent amendments focus on________.
A)rebuilding overfished fisheries
B)protecting ecosystems
C)reducing bycatch
D)catch share programs
E)All of these answers are correct.
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Chapter 26: coal Bringing Down the Mountain
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Q1) We currently have technologies to capture all but which of the following?
A)mercury
B)particulates
C)sulfur
D)carbon dioxide
E)All of these answers are correct.
Q2) Environmentalists are especially concerned about the amount of carbon dioxide released from burning coal because it _________________.
A)is a significant contributor to acid rain
B)depletes the ozone layer
C)is a significant greenhouse gas
D)clogs lungs and aggravates asthma
E)blocks the uptake of oxygen by the hemoglobin
Q3) What are some of the hazards associated with coal mining?
Q4) The hardest form of coal is _________________.
A)lignite
B)bituminous
C)peat
D)anthracite
Q5) Discuss how mountaintop removal can affect stream quality.
Page 28
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Chapter 27: Oil and Natural Gas the Bakken Oil Boom
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Q1) Natural gas is predominantly which greenhouse gas?
A)carbon dioxide
B)water vapor
C)ozone
D)methane
E)nitrous oxide
Q2) What is an unintended result of the Bakken boom?
A)increase in air pollution
B)increased the crime rate
C)road destruction
D)increased water pollution
E)All of the answers are unintended results.
Q3) What is energy security,and why is it an important issue for many countries?
Q4) Why is meeting our future needs considered a wicked problem?
A)We are running out of oil and will have to rely on other countries to provide it.
B)We need reliable energy,but our energy choices create problems.
C)We don't have the ability to use renewable energy sources.
D)There is no viable energy source available to replace fossil fuel use.
Q5) What are the stages in the production of oil after a new well is drilled?
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Chapter 28: Air Pollution the Youngest Scientists
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Sample Questions
Q1) Which air pollutant is NOT regulated by the EPA?
A)lead
B)ground-level ozone
C)volatile organic compounds (VOC)
D)sulfur dioxide
E)All of these answers are regulated by the EPA.
Q2) Acid deposition results from burning fossil fuels that release ___________ that react in the atmosphere to form acids that fall back to Earth as acid rain,snow,and fog.
A)sulfur and nitrogen oxides
B)lead and mercury
C)carbon monoxide and nitrogen oxides
D)VOC and sulfur oxides
E)lead and VOC
Q3) Which form of air pollution is acid rain?
A)secondary air pollutant
B)primary air pollutant
C)point source
D)nonpoint source
E)ground-level pollution
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Chapter 29: global Climate Change Climate Refugees
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Sample Questions
Q1) Climate models can use programs to make future climate projections by plugging in values for ____________.
A)temperature
B)CO<sub>2</sub> levels
C)global air circulation patterns
D)precipitation
E)all of these variables
Q2) Analyzing current and historic data bout CO<sub>2</sub> tells us current CO<sub>2</sub> levels _____________.
A)are lower than they have been in the past 2.7 million years
B)are only slightly higher than they have been in the past 2.7 million years
C)are the same as they have been for the past 100 years
D)are higher than they have been in the past 2.7 million years
E)We need more data to make any conclusions about the current CO<sub>2</sub> levels.
Q3) Describe the difference between mitigation and adaptation as it applies to climate change.Provide an example of each.
Q4) How is a positive feedback loop different from a negative feedback loop? Provide an example of each.
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Chapter 30: Nuclear Power the Future of Fukushima
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Sample Questions
Q1) The mass number for an element is composed of which of the following?
A)electrons and protons
B)protons and neutrons
C)neutrons and electrons
D)protons
E)neutrons
Q2) ___________________ is a nuclear reaction that occurs when a neutron strikes the nucleus of an atom and breaks it into two or more parts.
A)Nuclear fusion
B)Nuclear fission
C)Radioactive decay
D)Cold fusion
E)Cold fission
Q3) Which of the following is emitted during radioactive decay?
A)gamma radiation
B)heat
C)subatomic particles
D)energy
E)All of these answer choices are correct.
Q4) How do control rods regulate the rate of the nuclear reaction?
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Chapter 31: Sun, Wind, Water, and Earth Energy Fueled by the Sun
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Q1) ________________ energy is the heat stored underground,contained in either rocks or fluids.
A)Wind
B)Hydroelectric
C)Biomass
D)Geothermal
E)Solar
Q2) In what year is solar electricity generation projected to equal hydroelectric energy generation?
A)2016
B)2040
C)2035
D)2020
Q3) Iceland uses geothermal energy to produce electricity and heat.Why didn't the people of Samsø choose this energy source?
A)It is very expensive to use.
B)It isn't a very efficient energy source.
C)It works only in areas close to hot zones or fault lines like Iceland is.
D)It can't be used to produce electricity.
E)It is too cold in Samsø to use geothermal energy.
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Chapter 32: Biofuels Gas From Grass
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Q1) Which of the following is a concern regarding early corn ethanol projects?
A)Corn production requires energy inputs like fertilizers and pesticides.
B)Considerable water is required to produce ethanol from corn.
C)The projects used as much (or almost as much)energy as they produced.
D)All of these answers are concerns.
E)None of these answers are concerns.
Q2) Explain the outcome of David Tilman's research and what it meant for biofuel crops.
Q3) What are some advantages and disadvantages of using algae for biofuel?
Q4) Compared with gasoline,biofuels produce fewer greenhouse emissions.Which of the following biofuels produces the FEWEST greenhouse gas emissions when compared with gasoline?
A)corn grain ethanol
B)high-input biofuels
C)soybean biodiesel
D)LIHD grasses grown on farmland
E)LIHD grasses grown on marginal land
Q5) Most biofuels today are made from crops grown specifically for energy use.What are the main crops used to produce ethanol and biodiesel? What are the environmental downsides to using these crops in biofuel production?
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