Ice Ages
A) have been common through Earth history.
B) have glacial episodes separated by very short interglacial stages.
C) are caused primarily by plate tectonics.
D) are the result of variations in the amount of solar heat received.

Question

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The Answer of Ice Ages
A) have been common through Earth history.
B) have glacial episodes separated by very short interglacial stages.
C) are caused primarily by plate tectonics.
D) are the result of variations in the amount of solar heat received.