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24 November, 11:53

A variety of microorganisms live as symbionts in the human digestive tract. What determines whether their relationship with the human is parasitic or mutualistic?

a their size compared to human cells

b their reproductive rate compared to the replication rate of human cells

c. whether or not they gain energy from food that the human eats

d whether their actions harm or benefit the human host

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  1. 24 November, 14:22
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    Answer: D, whether their actions harm or benefit their human host.

    Explanation: The nature of the relationship between the host and microorganism can be categorized based on whether the actions of the microorganism harm or benefit the host.
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