You can only see it if you use a microscope and you cannot taste it or smell it
Answer:
D.
Explanation:
A. just isn't true. B. isn't true either because, like bacteria, we are adapting to their changes. C. isn't right either because some bacteria helps us survive. D. is the only true statement.
<span>Joints may be prepared for vigorous physical activity through stretching. Because stretching preps the joints for vigorous workouts.
I hope this helps!
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