How do people not understand the carbon cycle? Do cows fart and burp greenhouse gasses? yes! And then it is recaptured by grass, the cows eat it again, release it again, then it's captured by grass again, etc..

Using the same logic, I don't see how the Earth is not completely covered by water. I mean it rains all the time. Surely it must fill up the entire Earth at some point! /s Or maybe there is such thing as the water cycle and it's the same water being used again and again