Can you put ice ages in a sentence for me.?

Question

i have to put ice ages into a sentance that would remind you of the deffinition which is:

Ice Ages-periods of very cold temperatures when part of the earth was covered with large ice sheets.

im not sure what to put =/

Answer 1

"the most recent ice age was during the Pleistocene"

Answer 2

The Ice Ages were periods of time during which glaciers covered a large part of the earth's surface.

Answer 3

what Nick said - although you could add 'which was a time of widespread glaciation' which would demonstrate your understanding of the term