AP BIOLOGY

Detailed explanation-1: -Processes such as erosion release this carbon back into the atmosphere very slowly, while volcanic activity can release it very quickly. Burning fossil fuels in cars or power plants is another way this carbon can be released into the atmospheric reservoir quickly.

Detailed explanation-2: -Carbon dioxide is added to the atmosphere naturally when organisms respire or decompose (decay), carbonate rocks are weathered, forest fires occur, and volcanoes erupt. Carbon dioxide is also added to the atmosphere through human activities, such as the burning of fossil fuels and forests and the production of cement.

Detailed explanation-3: -Examples of carbon sources include the burning of fossil fuels like gas, coal and oil, deforestation and volcanic eruptions. Now, increased human activity is upsetting the balance. We’re releasing more carbon into the atmosphere than the Earth’s natural carbon sinks can absorb.