The polar ice caps will melt. Volcanoes will erupt more often. The number of earthquakes will decrease. Rainforests will be unable to support animal life.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: As the amount of carbon dioxide in the atmosphere increases, which occurrence is most likely a long-term result?
Possibilities:
- The polar ice caps will melt.
- Volcanoes will erupt more often.
- The number of earthquakes will decrease.
- Rainforests will be unable to support animal life.

The polar ice caps will melt.