The amount of tropical forest that is lost each year is approximately equivalent to the size of what U.S. state?
A) Rhode Island
B) Texas
C) Alaska
D) Delaware
E) Wisconsin
E
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You might expect a flower pollinated by a hummingbird to
A) open only at night. B) give off a fragrant smell. C) be red in color. D) be white in color.
A shrimp farm in Thailand results in
A) the short-term loss of natural services. B) the local loss of natural services. C) long term gains by a regional shrimp farmer. D) specific gains by the shrimp farmer.
The best description of anthropogenic activities is ________
A) human activities that reduce carbon emissions through taxing fuel used for automobiles B) human activities that increase greenhouse gases in the atmosphere C) all activities by humans affecting the Earth and its biosphere D) human activities that reduce carbon emissions through tax credits for reducing automobile emissions E) human activities that decrease greenhouse gases in the atmosphere
Bile salts are best described as which of the following?
A) detergents B) lachrymators C) oxidizing agents D) none of these