2 Points
A species of fish is introduced into a lake. The fish is better at hunting for
food than the old fish. The old fish die off, and the new fish population
increases. Which is the best way to describe these fish in the new
ecosystem?
A. Keystone species
B. Native species
C. Invasive species
D. Cyclical species

C. invasive

Explanation:

because they are just being introduced and they killed off the old species

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