What are the two major sources of atmospheric carbon?

There are both natural and human sources of carbon dioxide emissions. Natural sources include decomposition, ocean release and respiration. Human sources come from activities like cement production, deforestation as well as the burning of fossil fuels like coal, oil and natural gas.

Explanation:

i would have a lunch. it's one big package of food, making it one food. : p

2%? i tried finding the exact sorry if it's not 100% correct ; -;