The fossil of a plant reveals that it produced spores that were used for reproduction. Which type of plant was it
seed

It was a non-seed-bearing plant, or sporophyte, such as a moss, liverwort, or hornwort.

Explanation:

All plants have spores as part of their life cycle (alternating between sporophyte, which is asexual, and gametophyte, which uses sexual reproduction), but because the spores of this  fossilized plant were used for reproduction, this plant most likely did not produce any seeds.  

rising sea temps which are causing coral reefs to bleach and die out

glaciers are melting causing sea levels to rise wgich could flood out land

explanation:

biology is the study of life. it is the study of living organism.