What does the existence of arctic coal tell scientists?

That there used to be an abundance of plants and animals that lived there. Does this help?

Explanation:

Coal forms from dead things from the past being subjected to high pressure.

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )

"do a testcross with a homozygous recessive plant."