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 8SQ
Summary Introduction
Concept introduction: Carbon is the most abundant substance in living things. In the carbon cycle, carbon circulates among Earth’s atmosphere, oceans, rocks, and soils, and into and out of food webs.
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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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- Earth’s largest carbon reservoir is______ . a. the atmosphere c. seawater b. sediments and rocks d. living organismsarrow_forwardIn most ecosystems, the primary producers use energy from______ to build organic compounds. a. sunlight b. heat c. breakdown of wastes and remains d. breakdown of inorganic substances in the habitatarrow_forwardThe process whereby oxygen is depleted by the growth of microorganisms due to excess nutrients in aquatic systems is called ________. a. dead zoning b. eutrophication c. retrofication d. depletionarrow_forward
- The main source(s) of hydrogen and oxygen for plants is (are)____ . a. soil and air c. water and fertilizer b. water and soil d. water and airarrow_forwardCarbon is present in the atmosphere as ________. a. carbon dioxide b. carbonate ion c. carbon dust d. carbon monoxidearrow_forwardBurning fossil fuels results in the emission of ________________ into the atmosphere. a. CO2 b. O2 c. none of the above d. ozonearrow_forward
- Greenhouse gases_____ . a. slow the escape of heat energy 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 abovearrow_forwardWe learned an ironic twist in the film called "The Other Inconvenient Truth." It was that a. agriculture creates more pollution than other sources, but we have to increase farming for the growing population b. that nitrogen in the soil is significant pollution, but if we don't use these fertilizers we will not have enough food c. That methane is produced by animals and by growing rice. So becoming vegetarian won't clear methane from the atmosphere. d. agriculture uses 70% of fresh water mined , causing a salt water pollution tooarrow_forwardRemoving forests results in less stable ____. a.plantations b.development c.climate d.agriculture e.economic growtharrow_forward
- As greenhouse gas levels in the atmosphere decrease, global temperatures __________________________. a. increase b. stay the same c. decrease d. there is no correlationarrow_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_forwardWhich 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 fuelsarrow_forward
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