we will all suffocate due to no oxygen
carbon dioxide
carbon dioxide
carbon dioxide
they obtain carbon by humans and organisms, etc.
carbon dioxide
from atmosphere
If humans continue doing nothing to reduce their impact on the carbon cycle then the levels of carbon dioxide in the atmosphere will continue to rise.
Only factories that use and burn coal produce carbon dioxide into the atmosphere. Forest fires and humans produce the most carbon dioxide.
The carbon cycle moves carbon in and out of the atmosphere, the land, plants and animals, and the oceans. Carbon dioxide in the atmosphere is a greenhouse gas that keeps the planet warm. Too much carbon dioxide in the atmosphere, from humans adding it by burning fossil fuels, is causing an accelerated greenhouse effect, global warming.
Through oxygen cycle. Humans and animals take in oxygen and give out carbon dioxide. Plants take in carbon dioxide and give out oxygen. This ways the oxygen is circulated in the atmosphere.
Nature produces the vast bulk of carbon dioxide in the atmosphere. Rotting trees, and dead matter produce over 90% of the current levels of carbon dioxide. Man produces between 3 and 6 percent of all CO2 annually.
Since there were less trees using carbon dioxide and converting it to oxygen, more carbon dioxide was released into the atmosphere.