A saprobe differs from a parasite in that
A. a saprobe derive nutrients from dead plants and animals, but a parasite derives nutrients from living plants and animals.
B. a saprobe is a fungus, but a parasite can be any type of microbe.
C. a saprobe does not harm a host that it lives on, whereas a parasite does harm a host.
D. a saprobe cannot infect a human, but a parasite is always infectious.
Answer: A
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