Certain species of aquatic organisms are particularly sensitive to environmental changes. Scientists often monitor the behavior population size, and overall health of these so-called indicator species in order to evaluate the water quality in an ecosystem. Biological indicator species are important to water systems because
A. They can convert harmful pollutants into helpful nutrients in an ecosystem.
B. They provide an early warning sign of degrading water quality in an ecosystem.
C. They become healthier as water quality degrades and can replace weaker species.
D. They are used to control water quality by filtering out pollutants in an ecosystem
Answers: 2
Biology, 22.06.2019 03:00, flores1717
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Biology, 22.06.2019 22:30, tatilynnsoto17
Which of the following correctly matches an immune system cell with the defense it produces? a. b cells release cytotoxins. b. t cells release cytotoxins. c. b cells absorb antibodies. d. t cells absorb antibodies.
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Certain species of aquatic organisms are particularly sensitive to environmental changes. Scientists...
Mathematics, 02.12.2020 23:00
Mathematics, 02.12.2020 23:00