Answer:
3
Explanation:
bacteria possess cell wall made of murein
D: a nucleus
the prokaryote cell has no nucleus and for that matter no other membrane bound organelle
The answer is A. Commensalism
refers to relationships between organism where one benefits while the other
is unaffected. The relationship is also not
obligatory. In this case, the hippo is unaffected
while the catfish benefit from its feces. The other choices involve mutualism.
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