Fact 1: Carbon may be stored in sedimentary rock for millions of years.

Fact 2: Carbon sinks are storage areas for carbon.

Given the two facts above, answer the question "What can be stored in sedimentary rock for millions of years?" with the following options: 
- Chemical energy
 - fossil fuels
 - Energy
 - Coal sinks
 - bioaerosols
 - In sediment
 - Energy.
 - kinetic energy


 

    Coal sinks     