Why should we understand how to use microscopes

If you understand how to use microscopes you can look at things the human eye cant see alone. You can see germs on your paper any many other things. People who want to become succesful scientists look through microscopes to make amazing discoveries. Many of the medicine we have today has been discovered by using microscopes and observing how the cells or germs react.

The short-term effect of tar on the body is increased blood pressure.

25 ) where the jellyfish were counted at