Which is the primary anthropogenic source of atmospheric carbon dioxide (CO2)?
A)Clearing and burning land.
B)Rice farming.
C)Respiration.
D)Burning of fossil fuels.

Question

Quizplus · Accepted Answer

The burning of fossil fuels (e.g. coal, oil, and natural gas) is the primary anthropogenic (human-caused) source of atmospheric carbon dioxide. This is because the carbon stored within these fuels is released into the atmosphere as CO2 when they are burned for energy. Clearing and burning land as well as rice farming also contribute to atmospheric CO2, but to a lesser extent in comparison to the burning of fossil fuels. Respiration is a natural process that releases and consumes CO2, but it is not considered an anthropogenic source.

Which Is the Primary Anthropogenic Source of Atmospheric Carbon Dioxide