Question

Why are scientists certain that the climate system is warming?

Answer 1

Answer:

Ice cores drawn from Antarctica, Greenland, and tropical mountain glaciers proves that Earth's climate responds to changes in greenhouse gas levels. You can also find ANCIENT evidence in tree rings, coral reefs, layers of sedimentary rocks, and ocean sediments.

( re word it to however you would've said it if possible.)

Explanation:

I learned about this already, and had to do deep research when I did.