The use of coal and other fuels is the most prominent means by which humans add carbon dioxide to the atmosphere. a. true b. false

True

Explanation:

The major source of carbon which is released in the atmosphere by human beings comes from human activities such as burning of petroleum products such as oil, gas and coal and through deforestation as well.  

Nearly, deforestation of 1 acre causes release of 3 metric tons of carbon dioxide in air. Like burning of coal causes global warming due to heat entrapping by carbon dioxide (termed as greenhouse effect)

the answer is false?