Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 46, Problem 9SQ
Summary Introduction
Concept introduction: Greenhouse gas, an atmospheric gas, which has the ability to absorb and reradiate heat energy, helps the Earth to be warm enough to sustain life. The mechanism by which this occurs is referred to as the greenhouse effect.
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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
The 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.
Chapter 46 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 46 - Changes in the Air To assess the impact of human...Ch. 46 - Prob. 2DAACh. 46 - Prob. 3DAACh. 46 - Prob. 4DAACh. 46 - In most ecosystems, the primary producers use...Ch. 46 - Organisms at the lowest trophic level in a...Ch. 46 - Prob. 3SQCh. 46 - Prob. 4SQCh. 46 - Efficiency of energy transfers in aquatic...Ch. 46 - Prob. 6SQ
Ch. 46 - Earths largest carbon reservoir is _______. a. the...Ch. 46 - Prob. 8SQCh. 46 - Prob. 9SQCh. 46 - The _____ cycle is a sedimentary cycle. a....Ch. 46 - Earths largest phosphorus reservoir is _______. a....Ch. 46 - Prob. 12SQCh. 46 - Nitrogen fixation converts _______ to _______. a....Ch. 46 - Prob. 14SQCh. 46 - Prob. 15SQCh. 46 - Where does your drinking water come from? An...Ch. 46 - Scientists study bubbles trapped in ancient...Ch. 46 - Nitrogen-fixing bacteria live throughout the...
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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_forwardGreenhouse 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.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 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_forwarda. Is the greenhouse effect harmful under ordinary circumstances?b. List the primary greenhouse gases and explain their effects on theearth’s temperature.c. What occurrence has made them dangerous to the global ecosystem?d. What could each person do on a daily basis to cut down on thepotential for disrupting the delicate balance of the earth’s ecosystems?arrow_forwardHuman use of fossil fuels has what consequences? Group of answer choices a. increase in CO2 concentration in the atmosphere b. return of fossilized carbon to the active carbon cycle c. increase in global temperatures d. all of the other optionsarrow_forward
- Which 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_forwardSolar radiation plays the most important role in the: (A) Water cycle (B) Nitrogen cycle (C) Carbon cycle (D) Oxygen cyclearrow_forward
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