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 12RQ
A key feature of estuaries is
a. low light conditions and high productivity
b. salt water and fresh water
c. frequent algal blooms
d. little or no vegetation
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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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- Flux of anthropogenic Phosphorous from terrestrial to aquatic ecosystems can have negative effects, such as A. Eutrophication B. Ocean acidification C. Acid rain D. Both A and C E. A, B and Carrow_forward6. Which allows a variety of life to thrive in estuary ecosystems? A the temperature fluctuations B. the mixture of freshwater and salt water C. the dissolved nutrients that enter from nearby farms D. the constant movement of water that keeps the water cloudyarrow_forwardWhich of the following does not vary predictably with the depth of the aquatic environment? a. dissolved oxygen c. penetration by sunlight b. temperature d. salinityarrow_forward
- Which of the following does not vary predictably with the depth ofthe aquatic environment?a. dissolved oxygen b. temperature c. penetration by sunlight d. salinityarrow_forwardAbiotic factors are important to biotic organisms because they include A.Weather and rocks B. Resources and conditions C. Single-celled organisms D. Plants and bacteriaarrow_forwardWhy would anadromous salmon be considered good indicators of both marine and terrestrial ecosystem health?A. they require both clean fresh and marine aquatic biomes to liveB. they feed on and help feed many other organisms. C. they supply entire watersheds with nutrients D. all of the above (A-C)arrow_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. retrophication d. depletionarrow_forwardThe producer in an ocean grazing food web is usually a _____. a. plant b. animal c. fungi d. planktonarrow_forwardWhich of the following serves as evidence of water pollution? a an abundance of water plants in lakes b increase in temperature c indicator species d carbon sinksarrow_forward
- Which of the following best describes bycatch? a. dividing catch of marine life among fishing boats b. bonus catch of marine life, such as increased numbers of intended catch c. unintentional catch of nontarget marine life in fishing gear d. catching too much of a target species of fisharrow_forwardHarmful algal blooms are occurring in an estuary near the town of Reedville . As a result , oxygen concentrations in the water of the estuary have decreased . This has killed fish and other aquatic life in the estuary . Concerned for the local food supply and habitats , residents of Reedville wish to take action . Which action will most likely result in a reduction in algal blooms ? F building smaller dams G stopping fertilizer use on residential lawns H stopping recreational use of the estuary J using less groundwaterarrow_forwardThe rocky shore shows the greatest level of biodiversity: a. Above the high tide line b. Between the high-tide and low-tide lines c. In the splash zone d. In brackish water e. In rock pools above the mid-tide linearrow_forward
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