Which statement is true about carbon? A. All carbon is in the form of carbon dioxide.
B. Carbon can exist in many forms, but the total amount of carbon stays the same.
C. The amount of carbon in the cycle can increase or decrease based on the number of factories present.
D. Only living things release carbon dioxide into the atmosphere.
6

B. Carbon can exist in many forms, but the total amount of carbon stays the same.

Explanation:

The true statement from the given choices is that carbon can exist in many forms but the total amount of carbon stays the same.

The amount of carbon in nature is fairly balanced and constant.

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

the answer would be 32*f