Q: What element can be stored in limestone for millions of years?
Options:
- (A) oxygen
- (B) Energy
- (C) matter
- (D) carbon
- (E) sodium
- (F) helium
- (G) rock salt
- (H) heat
Let's think step by step below.
Carbon may be stored in sedimentary rock for millions of years. Limestone is a type of sedimentary rock. Carbon may be stored in limestone for millions of years.
Thus, the answer is (D).