________ is a dark, fine-grained extrusive rock
A) Tufa
B) Basalt
C) Granite
D) Conglomerate
E) Shale
Answer: B
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Which one of the following is correct concerning the physical geography of New Zealand?
A. New Zealand is much more likely to experience earthquakes than Australia. B. North Island has much cooler average annual temperatures than South Island. C. Typhoons frequently strike the shores of South Island. D. North Island is situated in the temperature latitudes while South Island is situated in the tropical latitudes.
A dark-light couplet of sedimentary laminations representing an annual deposit in a glacial lake:a
cirque d. varve b. gene e. organic reef c. vertebrate
The U.S. Environmental Protection Agency has listed arsenic, lead, mercury, vinyl chloride, and polychlorinated biphenyls as the _____.
a. top five mutagens b. most important neurotoxins c. leading teratogens d. leading causes of cancer e. top five toxic substances
When you shake fish food into in an aquarium, you are contributing to a(n)
A. open system. B. closed system. C. negative feedback system. D. positive feedback system.