Commensalism is when one organism benefits off the other one without harming it. Examples are tree frogs that use plants for protection or jackals that have been expelled from packs trailing tigers and feeding on the remains of its kill. Barnacles on whales get shelter by attaching to a whales body
The answer is B. hope you get it
Answer:
because your body is fighting against the disease
B. The layering of the rock.
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