Ice age:
For over 85% of the earth’s four and a half billion-year history, the earth has maintained a worldwide greenhouse with hot and humid climates reaching from the equator to the poles, however. However, regularly, the earth experiences a reversal world temperaturestemperature drop and glaciers reach out to clasp the earth and ice, for. For instance, several thousand meters thick, huge ice sheets, encased parts of Asia, North America, and Europe, these statusstatues have been called an ice age. The earth is currently in the midst of an ice age due to the fact that the Antarctic and Greenland ice sheets remain.
The Earth has experienced at least five principal ice ages.

Huronian: The Huronian was from 2400 to 2100 million years prior. It was one of the longest ice ageages that occurred in the earth’s history. Scientists assume it may, as a result of lack of volcanic activity, loweringlower the carbon dioxide in the atmosphere.

Cryogenian: The Cryogenian ice age occurred from 850 to 635 million years ago. Earth became approximately covered in ice about 700 million years ago, which scientists call this a "Snowball Earth."

Andean-Saharan: The Andean-Saharan ice age came about between 460 and 430 million years ago.

Karoo: The Karoo ice age lasted around a hundred million years between 360 and 260 million years ago.

Quaternary: The Quaternary is the most current ice age. It began at around 2.5 million years in the past and is still going, so we are currently in this ice age. The earth had no polar ice caps, but in the Quaternary, icecaps began to grow rapidly. The sea level was 70 meters higher if there was no ice.