BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 42, Problem 4SA
Primary productivity on land is affected by _______.
| a. nutrient availability | c. temperature |
| b. amount of sunlight | d. all of the above |
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Chapter 42 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 42 - In most ecosystems, producers use energy from...Ch. 42 - Prob. 2SACh. 42 - Organisms at the first trophic level ________. a....Ch. 42 - Primary productivity on land is affected by...Ch. 42 - An _______ is an autotroph. a. producer c....Ch. 42 - Most of Earths fresh water is _______. a. in lakes...Ch. 42 - Earths largest carbon reservoir is _______. a. the...Ch. 42 - Carbon is released into the atmosphere by ________...Ch. 42 - Prob. 9SACh. 42 - The ______ cycle is a sedimentary cycle. a....
Ch. 42 - Earths largest phosphorus reservoir is ________....Ch. 42 - Plants obtain ______ by taking it up from the air....Ch. 42 - Prob. 13SACh. 42 - Soil in _______ is richest in carbon. a. the...Ch. 42 - Prob. 15SACh. 42 - Marguerite has a vegetable garden in Maine....Ch. 42 - Prob. 2CTCh. 42 - Prob. 3CTCh. 42 - Prob. 4CT
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- In 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_forwardPlants use carbon dioxide from the air and are therefore called _____. a. consumers b. producers c. decomposer d. carbon fixersarrow_forwardThe position of an organism along a food chain is known as its ________. a. locus b. location c. trophic level d. microcosmarrow_forward
- The amount of energy available to heterotrophs is ________. Select one: a. net primary productivity (NPP) b. always equal c. kilocalories per unit area d. gross primary productivityarrow_forwardDecomposing organic matter in soil is called______ . a. clay d. silt b. humus e. sand c. topsoil f. leachingarrow_forwardThe 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_forward
- All organisms at the top trophic level_______ . a. capture energy from a nonliving source b. obtain carbon from a nonliving source c. would be at the top of an energy pyramid d. all of the abovearrow_forwardThe producer in an ocean grazing food web is usually a________.a. plantb. animalc. fungid. planktonarrow_forwardAn example of a sustainable agriculture practice is _______. a. widespread use of herbicides and pesticides b. using routine antibiotics for all feed animals c. large-scale irrigation d. composting all plant residues e. feeding livestock in feedlotsarrow_forward
- The 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_forwardRemoving forests results in less stable ____. a.plantations b.development c.climate d.agriculture e.economic growtharrow_forwardThe mussels that live at the NW Eifuku volcano are examples of _______. a. chemoautotrophs b. photoautotrophs c. apex predators d. primary consumersarrow_forward
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