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How was bacteria first discovered?
A. asking people to donate teeth
B. by looking at animals
C. by looking at dental scrapings under a microscope
D. by looking at a thin piece of cork

User Chris Lieb
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2 Answers

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Answer:

I believe that it is D

Step-by-step explanation:

User Jacob Galam
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It’s c. By looking at dental scraping under microscope