Living organisms are members of all of the levels listed below. However, soil is a component of ___
a. the community
b. the population
c. the ecosystem
d. both the population and ecosystem
e. both the community and the biosphere
ANSWER: c
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If each human lung contains about 300 million alveoli with a summed total surface area for gas exchange of 40 square meters, what is the approximate surface area of a single alveolus?
A. 750 square micrometers B. 133 square millimeters C. 7.5 square micrometers D. 7.5 square millimeters E. 0.133 square micrometers F. 1.33 square micrometers
With regards to prokaryotes and eukaryotes, all of the following are true except
Which statement best describes fertilization in the moss life cycle?
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When non-target species are caught they are called:
a. excess fish. b. undesirable species. c. ineffective fishing. d. incidental catch. e. secondary catch.