They don't. But plants scrub the air. They take our wasted carbon dioxide and make oxygen out of it. If we don't have them to make oxygen then eventually we're going to run out of oxygen, and ... die. Probably.
[The Circle of Life, in a nutshell. It probably won't be that dramatic, but it's definitely worrisome.]
no subject
[The Circle of Life, in a nutshell. It probably won't be that dramatic, but it's definitely worrisome.]