Answer:
B. Plankton are a food source for humans
Plankton is food for many small fish. With the abundance
of Plankton, these fish can thrive. When these smaller fish thrive they are food to bigger fish that we eat. Since the smaller fish thrive then the bigger fish that we eat also thrive. This makes bigger fish an abundant food source due to plankton supporting the smaller fish and other organisms.
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