A glacier forms when ____
a. snow moves downslope under the influence of gravity
b. ice is present year-round at a mountain top
c. temperatures stay below freezing year-round
d. ice reaches a thickness of 10 meters
e. an ice mass begins to flow under its own weight
e
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The terms continental glacier and ice sheet are synonymous. Indicate whether the statement is true or false
Read carefully through the paragraph below, and decide which of the options is correct. The principle of isostasy explains variations in surface elevations in terms of the type and thickness of underlying crust
Low-density crust floats on denser, underlying mantle so that the temperature is everywhere the same at the base of any thick vertical column through the crust and upper mantle. A) The word " isostasy" should be replaced by "superposition." B) The word " elevations " should be replaced by "pressures." C) The word "temperature" should be replaced by " pressure ." D) The words " underlying crust " should be replaced by " underlying mantle."
Which method is not used to detoxify hazardous and toxic wastes?
A. phytoremediation B. crushing and grinding C. bioremediation D. plasma gasification E. chemical treatment
Which of the following organisms primarily regulates its internal body temperature by external means?
a. Whale b. Bear c. Mouse d. Butterfly