Micro-organisms; bacteria

Question 1

Environment found in

Answer 1

Warm, moist and protein-rich.

Question 2

Harmful or unharmful?

Answer 2

Both, but mostly unharmful.

Question 3

3 fun facts

Answer 3

1. The number of bacteria in your mouth is more than the total number of humans on earth.
2. The length of a bacteria ranges from 0.5 to 5 micrometres.
3. Bacteria have been considered the first living organism on earth.