The end of Earth’s life cycle will occur as a result of the sun’s ____ phase
a. supernova
b. red giant
c. protostar
d. nebula
e. accretion
b
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A rapid downslope mass movement of snow and ice is called a(n) ____________________. Fill in the blank(s) with the appropriate word(s)
Which of the following best explains the formation of a medial moraine on a glacier?
A) A gravel pile that marks periods of glacial readvancement B) A ridge of debris carried down the center of glacial ice C) Sands and gravels that fill a subglacial stream channel D) A ridge of debris carried along the sides of an advancing glacier
Light and sound are ________ by seawater.
A. attenuated B. scattered C. absorbed D. refracted E. All of these are correct.
Permafrost is a serious issue for human settlement and survival in the Far North. What causes permafrost and why does it pose problems for continuous settlement in northern Canada and Alaska?
What will be an ideal response?