The answer is dependent variable.
Explanation:
Two important ways by which humans have affected the carbon cycle, especially in recent history, are: 1) the release of carbon dioxide into the atmosphere during the burning of fossil fuels, and 2) the clearing of trees and other plants (deforestation) that absorb carbon dioxide from the atmosphere
if youre asking what the element is, its
Nitrogen
Im pretty sure the answer is c.
let me know if its correct
