Which of the following is an example of parasitism?
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a. algae living on a sloth, giving it camouflage
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b. two fish protecting each other from predators
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c. tree frogs using the trees to hide from predators
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d. fleas living on a dog, making the dog ill
subm

The correct answer is d. Parasites take what they want from the host not trying to help out the host.

Explanation:

b would be the right answer

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation: