Dear Humanoid organism,

We are always watching.

You are in trouble with us.

As bacteria there is some good of us and some are bad

Some explanation

Bacteria are really important microbes – life on earth couldn’t exist without them! Bacteria have only one cell, shaped like a sphere, rod or spiral, A single one, called a bacterium, is really small, millions would fit on the head of a pin.

Some history

Bacteria have been around for millions of years and they can live in any area of the earth, no matter how hot or cold. Very few bacteria are harmful to you, most help to keep you healthy. The oldest bacteria known is about 769 million years old.

Growing Bacteria - Cool Science Experiment