Answers

2015-11-12T10:55:58+08:00
Bacteria are microorganisms that can be found everywhere. They are single-celled and they have structure. There are good and bad bacteria. Good Bacteria are beneficial and Bad Bacteria are Harmful.
0
Virus is an infectious agent that can harm our cells. In our body, the White Blood Cells are the ones who fight these viruses. and if our immune system is weak, we can have a sickness or diseases.
2015-11-12T22:25:43+08:00

BACTERIA is a one-celled organism, sometimes spherical, spiral, or shaped like a rod and appears singly or in chains.
0