The Atmosphere of the Earth

The whole earth, of course, is e no, six thousand kilometers in radius. The atmosphere wher we consider at least atmosphere is just like 30 or 50 kilometers high. It's a really small sliver, or a small coating of air that we have on the planet. And it was all made by bacteria. And plants, basically, right? Like beforea like avena, we didn't get that. We made that. So they're still around in the oceans, yes.