Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 25, Problem 4SQ
Greenhouse gases ________.
- a. slow the escape of heat from Earth into space
- b. are produced by natural and human activities
- c. are at higher levels than they were 100 years ago
- d. all of the above
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Greenhouse gases function by (a) blocking sunlight but letting out heat from Earth to outer space. (b) absorbing heat that radiates from Earth that would otherwise escape to outer space. (c) absorbing heat that radiates from the sun toward Earth. (d) releasing heat that radiates from Earth into outer space.
The main cause of the increase in the amount of CO2 in Earth’satmosphere over the past 150 years is(A) increased worldwide primary production.(B) increased worldwide standing crop.(C) an increase in the amount of infrared radiation absorbedby the atmosphere.(D) the burning of larger amounts of wood and fossil fuels
Which of the following natural forces is responsible for the release of carbon dioxide and other atmospheric gases? a. the Milankovitch cycles b. volcanoes c. solar intensity d. burning of fossil fuels
Chapter 25 Solutions
Human Biology (MindTap Course List)
Ch. 25 - Describe at least two ways that human activities...Ch. 25 - Prob. 2RQCh. 25 - Describe the greenhouse effect. Make a list of...Ch. 25 - Prob. 4RQCh. 25 - Prob. 1SQCh. 25 - Prob. 2SQCh. 25 - Prob. 3SQCh. 25 - Greenhouse gases ________. a. slow the escape of...Ch. 25 - All the following are renewable energy sources...Ch. 25 - Prob. 6SQ
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- If there are many greenhouse gases, why is only carbon dioxide considered a cause of global warming?a. The other gases do not cause global warming.b. It isn’t. Scientists are concerned about other causes; for example, release of methane from melting permafrost could have significant effects on global warming.c. Other gases occur in such low quantities that they have little effect on the climate.d. Carbon dioxide is the only gas that absorbs long-wavelength infrared radiation.arrow_forwardThe effect of CO2 emissions from burning fossil fuels is likely to bea. nothing; photosynthesis by plants will remove all the added CO2 from the atmosphere.b. nothing; the carbon cycle will simply run faster.c. planetary warming due to an increased greenhouse effect.d. planetary cooling due to a reduced greenhouse effect.arrow_forwardThe recent increase in atmospheric CO2 concentration is mainly a result of an increase in a. plant growth. b. the absorption of heat radiating from Earth. c. the burning of fossil fuels and wood. d. cellular respiration by the increasing human population.arrow_forward
- Explain why you agree or disagree with most of the world’s climate scientists that (a) atmospheric warming and climate change are happening now, (b) human activities are the dominant cause of current atmospheric warming and climate change, (c) only action by humans can slow the rate of atmospheric warming and climate change and avert or delay their projected harmful environmental, health, and economic effects.arrow_forwardIncreased average water temperature in Lake Erie as a result ofclimate change would most likely have what effect?a. decreased harmful algal blooms, as the higher temperatures wouldquickly kill most algae b. decreased fish populations as a result of eutrophicationc. longer algal blooms due to longer periods of warm waterd. b and ce. a, b, and carrow_forwardIf there were to be an abrupt change in the climate system, what would be the effect on human civilization? a. it would accelerate climate impacts by a decade or more b. it would require geoengineering to reverse the effects c. it may or may not be a serious concern, depending on the event d. it would be a catastrophe and nearly impossible to managearrow_forward
- Which of the following is most likely to contribute to warmer global temperatures? a)Clearing a forest b)Decreased meat consumption by people c)Switching to solar energy from coal d)Chemical pollution in oceansarrow_forwardWhich of the following is true of greenhouse gases in our atmosphere? Group of answer choices A. They include carbon dioxide, methane, and water vapor. B. They are responsible for the majority of back radiation to the Earth’s surface. C. Without these gases, the Earth’s surface would be considerably cooler (by more than 30OC). D. A and B E. A, B, and Carrow_forwardWhich biogeochemical cycle does not have a gaseous component but cycles from the land to sediments in the ocean and back to the land? (a) carbon cycle (b) nitrogen cycle (c) phosphorus cycle (d) hydrologic cycle (e) neither a nor c has a gaseous componentarrow_forward
- The deepest, richest soil in the world occurs in (a) temperate rain forest (b) tropical rain forest (c) savanna (d) temperate grassland (e) chaparralarrow_forwardWhich of the following statements about the carbon dioxide emitted to the atmosphere by human activities each year is most accurate? a. About half of it remains in the atmosphere and the other half is split equally between uptake by the oceans and vegetation. b. Nearly all of it remains in the atmosphere. c. About half of it dissolves in the oceans. d. On an annual basis, human-caused emissions of carbon dioxide are small compared to volcanic emissions. e. Human-caused emission of carbon dioxide is much greater than that emitted by respiration of all plants, animals, and microorganisms.arrow_forwardSpurred by record breaking heat waves and drought in the United States, how did views on climate change shift in 1988? a. climate change went from being an academic problem to a political problem b. the majority of Americans developed deep concerns about climate change c. the IPCC confirmed the warming was not due to natural variability d. climate change went from being a political problem to a social justice issuearrow_forward
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