Multiple choice

What is the germ theory of disease?

  1. I don't know

  2. theory that genetics cause many diseases

  3. theory that lifestyle causes many diseases

  4. theory that microorganisms are the cause of many diseases
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The germ theory of disease states that microorganisms, which are too small to see without magnification, are the cause of many diseases.

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