All of the following could cause global cooling except
A. increased sulfate aerosols in the atmosphere.
B. increased volcanic ash in the atmosphere.
C. increased cloud cover.
D. increased carbon dioxide in the atmosphere.
Answer: D
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All the organisms that live in a specific area and all the abiotic features of their environment make up a(n)
A. ecosystem. B. community. C. food web. D. population.
Describe a population growth curve, differentiating between systems with and without environmental resistance. What will be an ideal response?
Water is a national security issue.
Answer the following statement true (T) or false (F)
People have, seemingly, always feared the wolf. In order to restore and sustain biodiversity in ecosystems in which the wolf is a keystone species, the gray wolf was reintroduced into such ecosystems. Given human concerns and fears about wolves, was this the correct decision?
What will be an ideal response?