Question

How can limestone deposits be used to learn about earth’s history?

Answer 1

Limestone is made of compacted dead organisms, generally from the deep sea. From this, we can gather insight regarding organisms living in oceans from thousands and millions of years ago.

Step-by-step explanation:

Answer 2

Limestone is made of compacted dead organisms, generally from the deep sea.  From this, we can gather insight regarding organisms living in oceans from thousands and millions of years ago.