Coral reefs formed from calcium carbonate. Coal formed from plants that lived long ago. Limestone rocks quarried at Earth's surface. Carbohydrates stored in fruits and vegetables.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which represents a short-term storage for carbon?
Possibilities:
- Coral reefs formed from calcium carbonate.
- Coal formed from plants that lived long ago.
- Limestone rocks quarried at Earth's surface.
- Carbohydrates stored in fruits and vegetables.

Carbohydrates stored in fruits and vegetables.