Shale rock was found on the top layer of a limestone sample. there is a leaf imprint on the shale rock and a fish fossil on the limestone. what can scientists learn from the imprint and fossil?

Plz 98 points so i need 5 paragraphs of a fake article for the threat of pollution in asia i have examples look at those first and i would enjoy if you had word or grammerly and did it on there you very much