Snow converts to glacial ice when subjected to
A. pressure.
B. plastic deformation.
C. decreasing temperature.
D. sliding of the base downhill.
Answer: B
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Studies of ocean-floor sediments are of little use when studying long-term climate change
Indicate whether the statement is true or false
The predominate system of agriculture practiced in arctic Russia is
A) subsistence cultivation. B) intensive subsistence wet rice not dominant. C) mixed crop and livestock. D) pastoral nomadism. E) dairy
___________________ is a rock type that has virtually no pore space
Fill in the blank(s) with correct word
What were some of the earliest forms of life on Earth?
A. microscopic creatures that built mound-shaped structures called stromatolites B. sharks C. corals and other bottom-dwelling sea creatures D. land plants and insects