An ice age is a period when large expanses of ice sheets cover the land. millions of years ago, an ice age occurred on earth. fossils of animals buried under this ice were obtained. the organisms were frozen solid shortly after death, which made them . a mass extinction occurred during this period, which means that .

An ice age is a period when large expanses of ice sheets cover the land. Millions of years ago, an ice age occurred on Earth. Fossils of animals buried under this ice were obtained. The organisms were frozen solid shortly after death, which made them original tissue fossils. A mass extinction occurred during this period, which means that many species were wiped out.

Explanation:

Fossils of original tissues are remains or traces of animals and vegetables preserved in rocks or ice, in this case. Remains are animal parts (eg bones, teeth, scales) or plant (eg, trunks) and traces are evidence of their existence or their activities (eg footprints).

The exact definition of a mass extinction is arbitrary, but we can define it as a relatively common occurrence in the geological record that is characterized by the decrease of biodiversity through the exceptionally high extinction of several groups or, in other words, a reduction of many species of living beings.

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.