What is glacial flour?
A. one of the stages of glacial ice formation
B. finely ground rock that is part of a glacier’s load
C. general term for all material moved by glaciers
D. all sized particles that are part of a glacier’s load
E. huge boulders deposited by retreating glaciers
B
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Define "watershed analysis."
What will be an ideal response?
Aside from getting enough calories, we also need to obtain ________ through our diet
A) a complete carbohydrate B) minerals C) vitamins D) both B and C
What is the approximate mixing time of the ocean?
a. 16,000 years b. 160 years c. 16 years d. 1,600 years e. 1.6 million years
Methane hydrates may be a viable future energy source because
A) they are abundant and clean burning B) they are easily obtained from their deposits C) they are not fossil fuels and therefore will not contribute to the greenhouse effect D) they are renewable resources