A pet owner dropped some new fish into a pond. Several species of fish lived in the pond, but within a few months, only members of the new
species survived. What best explains why this happened?
A
Too many fish caused an imbalance in the ecosystem, so the food web was affected.
B. All new species have an advantage in an ecosystem.
c. The new species was probably bigger than the other fish in the pond.
D. All of the species were dying out, and the new species was the last to survive.
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