The ecosystem will not change from its original state. The ecosystem will eventually become balanced again. The consumers in the ecosystem will begin to consume carbon dioxide. The consumers in the ecosystem will begin to produce more oxygen.
I gave my students this multiple choice question: If an ecosystem's balance is disturbed by a volcanic eruption, what will most likely occur?

Only one answer is correct among these 4 choices:
- The ecosystem will not change from its original state.
- The ecosystem will eventually become balanced again.
- The consumers in the ecosystem will begin to consume carbon dioxide.
- The consumers in the ecosystem will begin to produce more oxygen.

Could you tell me which one is correct?

The ecosystem will eventually become balanced again.