I just took a test in school today. What question was I asked?

Question I was asked: The first microscopes were built in the 1600s. Microscopes have improved since then, but still perform the same job. How do microscopes most help scientists?

I just took a test in school today. What question was I asked?

Question I was asked: Why should scientists wear goggles during experiments?

I just took a test in school today. What question was I asked?

Question I was asked:
Naturally occurring variations within a species are mainly the result of mutations and