Compare the effects on the carbon cycle of natural processes such as volcanism and human activities
such as burning fossil fuels.

Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere.

Explanation:

Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere.

multiplying and dividing the two decimals and the eqations by the same number of the overalls

it's a.true. i'm kind of smart.