Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 20, Problem 4RQ
The producer in an ocean grazing food web is usually a _____.
a. plant
b. animal
c.
d. plankton
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Chapter 20 Solutions
Concepts of Biology
Ch. 20 - Figure 20.12 Which of the following statements...Ch. 20 - Figure 20.28 In which of the following regions...Ch. 20 - Decomposers are associated with which class of...Ch. 20 - The producer in an ocean grazing food web is...Ch. 20 - Which term describes the process whereby toxic...Ch. 20 - The majority of the water found on Earth is: a....Ch. 20 - The process whereby oxygen is depleted by the...Ch. 20 - Which of the following biomes is characterized by...Ch. 20 - Which of the following biomes is characterized by...Ch. 20 - Why is the tundra treeless? a. lack of sufficient...
Ch. 20 - Where would you expect to find the most...Ch. 20 - A key feature of estuaries is a. low light...Ch. 20 - Compare grazing and detrital food webs. Why would...Ch. 20 - Why are drinking water supplies still a major...Ch. 20 - The extremely low precipitation of subtropical...Ch. 20 - In what ways are the subtropical desert and the...Ch. 20 - Describe the conditions and challenges facing...
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- The position of an organism along a food chain is known as its ________. a. locus b. location c. trophic level d. microcosmarrow_forwardPlants use carbon dioxide from the air and are therefore called _____. a. consumers b. producers c. decomposer d. carbon fixersarrow_forwardThe process whereby nitrogen is brought into organic molecules is called ________. a. nitrification b. denitrification c. nitrogen fixation d. nitrogen cyclingarrow_forward
- 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_forwardAll 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 quantity of available nutrients ____________- from the lower levels ofthe energy pyramid to the higher ones.a. increases b. decreases c. remains stable d. cyclesarrow_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_forwardChemoautotrophic bacteria and archaea are the main primary producers for food webs______ . a. in mangrove wetlands c. on coral reefs b. at seamounts d. at hydrothermal ventsarrow_forwardThe movement of mineral nutrients through organisms and their environment is called a ________ cycle. a. biological b. bioaccumulation c. biogeochemical d. biochemicalarrow_forward
- Which of the following is not a fossil fuel? a. natural gas b. coal c. wood d. petroleumarrow_forwardThe ability of an ecosystem to return to its equilibrium state after an environmental disturbance is called ________. a. resistance b. restoration c. reformation d. resiliencearrow_forwardA salmon has higher mercury levels than phytoplankton. This is due to______? A. Food-web magnification B. Bioaccumulation C. Biomagnification D. Persistent organic pollutionarrow_forward
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