Describe the human impact on at least two aquatic ecosystems discussed. How have these alterations impacted these
ecosystems? What will be an ideal response?
Concepts to Consider
Flowing-water ecosystems: water pollution and damming adversely affect these systems.
Standing-water ecosystems: increased nutrients supplied by humans stimulate algal growth,
resulting in enriched ponds and lakes
Wetlands/estuaries: agriculture, pollution and land development all threaten these
ecosystems.
Marine ecosystems: pollution, coastal development, offshore mining and oil drilling, and
overfishing all threaten these systems.
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Answer the following statement true (T) or false (F)
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a. The test groups consist of the same individuals. b. The null hypothesis is correct. c. There is no difference in outcome between the control and experimental treatment. d. All physical conditions except for one are identical for all groups tested.
If flagellar rotation of Escherichia coli cells is ________, then CheA is ________.
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