There are different theories about how ice ages began. However, it is agreed that an ice age can happen when
A heavy rain causes flooding on mountains.
B ocean tides wash away too much sand from coastlines.
C the number of solar eclipses in a year decreases.
D large amounts of heavy snow don’t melt.
What factors can contribute to the onset of an ice age?
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The correct answer is D large amounts of heavy snow don’t melt.
During an ice age, temperatures are low enough that heavy snow accumulates over time without completely melting during the warmer months. This accumulation can lead to the formation of glaciers, which can expand across large areas, contributing to the conditions typical of an ice age. The other options do not directly correlate with the onset of ice ages. If you have more questions or need further clarification, feel free to ask!