Question

which was the first microorganism on the Earth?​

Answer 1

Answer:

bacteria is the first living organism on the earth.

Explanation:

i hope it is useful to you.

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).

Hope you find this helpful.

Feel free to mark it as brainliest !!