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Monica [59]
3 years ago
15

9 Which of these best demonstrates mutualism between certain types of bacteria and humans?

Biology
1 answer:
Rama09 [41]3 years ago
3 0
Answer: A

Explanation: Mutualism is where both parties are helped. In this scenario, bacteria get the nutrients they need and humans use the vitamin they produce to aid us.
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Explanation:

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