1.What process of the carbon cycle is likely causing the increase in carbon dioxide levels shown in the graph above ?

2. What is the most likely source of the increase in carbon dioxide in the atmosphere shown in the graph above ?

3.If people planted huge numbers of trees and other plants , how might the carbon dioxide levels in the graph above change ?

1What process of the carbon cycle is likely causing the increase in carbon dioxide levels shown in the graph above 2 What is the most likely source of the incre class=