An environmental study reporting on the way temperature, water quality, and minerals affect the animals in a salt marsh would be considering which level of organization?
A. individual organism
B. population
C. community
D. ecosystem
Answer: D. ecosystem
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At mid-ocean ridges, as two plates diverge,
A. solid mantle in the asthenosphere rises toward the surface and begins to melt due to the addition of heat. B. solid mantle in the asthenosphere rises toward the surface and begins to melt due to decompression. C. liquid mantle in the asthenosphere rises toward the surface.
Who proposed the concept of continental drift—a precursor to plate tectonics?
a. James Hutton b. William Smith c. Charles Darwin d. Abraham Werner e. Alfred Wegener
Environmental economists take a middle of the road stance in the debate about economic growth being sustainable
Indicate whether the statement is true or false
Which of the following is a source of dangerous indoor air pollutants in the U.S.?
A. rock deposits that emit radon gas B. burning dung to cook dinner C. electrical outlets that produce ozone D. burning crop residues to stay warm