Freons have been implicated in the depletion of which of the following atmospheric gases?
A) carbon dioxide
B) nitrogen
C) oxygen
D) ozone
D
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Organisms with opportunistic reproductive strategies generally
A. have a low biotic potential. B. are small and short-lived. C. give significant parental care to its offspring. D. are not very adaptable to change. E. are large and long-lived.
These diseases are the three largest viral killers
a. malaria, AIDS, and SARS b. tuberculosis, AIDS, and malaria c. Lyme disease, West Nile virus, and SARS d. flu, AIDS, and hepatitis B e. flu, AIDS, and West Nile virus
Only about 7% of ______ products are recycled in the United States because there are so many different types that can be difficult to separate
a. glass b. plastic c. paper d. aluminum e. cardboard
Earthquakes may occur along
A) transform boundaries. B) convergent boundaries. C) divergent boundaries. D) plate boundaries.