How are there microorganisms on every surface imaginable on Earth? How did they get there in the first place?

Question

How are there microorganisms on every surface imaginable on Earth? How did they get there in the first place?

In: Biology

Answer 1

There aren’t. There are many surfaces on earth with no microorganisms on them. It’s just that there are microorganisms on human skin, so everything that we come into contact with as humans will end up with microorganisms on it because we, or someone else, will at some point touch it. Course, leave it long enough and they’ll die, so there’ll only be the dead remains of microorganisms on many of those surfaces.