Question

aerobes were the first organism that originated on the earth true or false​

Answer 1

I don't understand

Ok$\sqrt{x}$

Answer 2

Answer:

Bacteria have been the very first organisms to live on Earth. They made their appearance 3 billion years ago in the waters of the first oceans. At first, there were only anaerobic heterotrophic bacteria (the primordial atmosphere was virtually oxygen-free).