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This is a period of time when extensive glacial ice covered much of earth, producing long-term climate change and causing the extinction of many species on earth.

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User AHegde
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2 Answers

2 votes

Answer:

ice age

Step-by-step explanation:

answered
User Ajdeguzman
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5 votes

Answer:

ice age/ Quaternary glaciation

Step-by-step explanation:

Ice ages have occurred in the earth history and do occur more or less regularly in a cycle. It is believed that ice ages are as a result of small changes in the earth's orbit and also dependent on the solar cycles. The temperatures on the earth reduce causing the ice sheets in the poles to extend to the subtropics.

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User Sharleen
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