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Question
The oxidation of ________ occurs both biotically and abiotically; however, at ________ pH values biotic oxidation is more common.A) Si / low
B) ammonia / high
C) Fe2+ / low
D) Hgo / low
Answer
This answer is hidden. It contains 1 characters.
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Which of the following statements about chlamydial infections is TRUE?
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Cholera is an example of a pandemic disease that
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C) is spread through direct contact and has only a human reservoir.
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A) one
B) two
C) four
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