[johnny]

Flaria, lmfao.

You're not really paying attention.

Algae is the leading producer of oxygen. That goes both ways - the leading producer of oxygen, and the leading consumer of carbon dioxide. Trees might make a difference, but they don't make that big of a difference. It wouldn't be pleasant if all the trees were cut from the planet, but at the same time that is simply not possible. Especially with regard to forestation laws in the Americas and other forest-heavy countries. Every time a tree is cut down, a new tree has to be planted, they can only be cut in "stages" (as in, "stage one" - new growth - trees cannot be cut down and must wait to be cut down in later stages, depending on the location of the trees and the type of tree).

And then we have grass, bushes, flowers, and every other plant on the planet, all of which are producing oxygen and consuming carbon dioxide. Trees are not the only front we have against suffocating.