Basal slip becomes a more important means of glacier movement in warmer months when more
meltwater collects at a glacier's base. Indicate whether the statement is true or false.
T
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What percentage of the world's plant and animal species are found in tropical rainforests?
A) 40% B) 10% C) 20% D) 50% E) 30%
With industrialized food production, for every one unit of energy put on the table in the United States, how many units of nonrenewable fossil fuel energy are required to produce it?
A. 1 B. 2 C. 5 D. 10 E. 100
Maximum velocity occurs when the stream is at the bankful stage
Indicate whether this statement is true or false.
Which of the following terms is used to describe a large circular depression that forms after an eruption when a magma chamber becomes empty and collapses in on itself?
A. crater B. tuff-cone C. sinkhole D. caldera E. lava pit