What fraction of the fossil fuel emissions in the united states could be absorbed by converting 25% of agricultural land in the u. s. ro native forests?

Answer;
Approximately 20% of the fossil fuel emissions in the United States could be absorbed by converting 25% of agricultural land in the U.S to native forests. 

Explanation; 
The largest source of greenhouse gas emissions from human activities in the U.S is from burning fossil fuels for electricity, heat, and also transportation. 
About 20 percent of these emissions could be absorbed by converting 25 percent of agricultural land in the U.S. to native forests. 
Forests are capable of absorbing fuel emissions such as carbon dioxide , they absorb huge amounts of carbon dioxide, thus replacing agricultural land with native forests would be of the great advantage.