Fact 1: Microscope is used to see small things by biologists by making them appear bigger.

Fact 2: Bacteria are very small.

Given the two facts above, answer the question "What are used to see bacteria by biologists by making them appear bigger?" with the following options: 
- an image
 - photons
 - tiny polyps
 - periscopes
 - amoebae
 - microscopes
 - x-rays
 - telescopes


 

      microscopes   