The primary ways in which the amount of carbon dioxide in the atmosphere can be increased are
A) Burning fossil fuels
B) Fertilizing croplands
C) Clearing forests and grasslands
D) Two of the above are correct
E) All of the above are correct

Question

Quizplus · Accepted Answer

Burning fossil fuels is the primary source of carbon dioxide emissions caused by human activities, resulting in a significant increase in atmospheric carbon dioxide concentration. Fertilizing croplands also contributes to carbon dioxide emissions through the process of soil cultivation, which can release carbon stored in the soil. Clearing forests and grasslands also leads to an increase in atmospheric carbon dioxide by reducing the natural carbon uptake capacity of the land. Therefore, options A and C are correct. Option B can also contribute to carbon dioxide emissions, but it is a minor source compared to burning fossil fuels and land-use change. Therefore, option D, which includes options A and C, is the best choice.

The Primary Ways in Which the Amount of Carbon Dioxide