Ground level ozone is
A. not regulated.
B. found only in rural areas.
C. a significant source of air pollution and contributes to the formation of smog.
D. a significant source of air pollution and contributes to the increase in the ozone hole.
Answer: C
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Benthic plants that live on the seafloor are called __________ and benthic animals that live on
the seafloor are called __________. Fill in the blank(s) with the appropriate word(s).
List and describe the three basic types of seafloor sediments. Give at least one example of each
What will be an ideal response?
Biochemical oxygen demand is the amount of oxygen needed
A. for aerobic breakdown of organic matter in a system. B. by humans to breathe. C. to destroy all chemical pollutants in a system. D. by all organisms in a system, both plants and animals.
Rates of primary productivity in the open ocean are about the same as ________.
A. intensive agriculture regions B. deserts and grasslands C. rainforests D. pastures