Answer:
1) negative because it provides land for something and they need to take of trees maybe.
2) positive because that ends up in trees and they grow more
3) negative because it takes a lot of space so trees need to be taken off.
4) positive.
5) negative because the habitats of the animals are normally near trees
6) negative.
7) positive because it lets the trees grow better
8) positive because plant breath carbon dioxide.