The carbon dioxide and oxygen cycles work through processes that convert carbon in the atmosphere into oxygen and transform oxygen back into carbon dioxide. Plants are the main producers of oxygen through a process calle... More » Science Environmental Science

According to Locust Valley Central School District, the carbon dioxide-oxygen cycle is the process through which carbon dioxide and oxygen move through the natural environment by photosynthesis, respiration, combustion a... More » Science Chemistry Organic Chemistry

The carbon oxygen cycle is the process by which plants use carbon dioxide for respiration during photosynthesis and produce oxygen. During this process, carbon dioxide becomes part of the plant, and when the plant dies i... More » Science Chemistry
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By absorbing carbon dioxide from the air and producing the oxygen needed for life, green plants form the basis for the long-term health and sustainability of all environmental systems. Plants are the only organisms on Ea... More » Science Environmental Science

Human activity impacts the carbon cycle by introducing more carbon dioxide into the atmosphere: carbon dioxide accumulates in the atmosphere, changes temperatures and alters the salinity levels of oceans, disturbing the ... More » Science Environmental Science Human Impact

The composition of Mars' atmosphere is 95.32 percent carbon dioxide, 2.7 percent nitrogen, 1.6 percent oxygen and 0.08 percent carbon monoxide. The remaining 0.3 percent is made up of various trace elements. More » Science Astronomy Planets

The mesosphere, which is the third innermost layer of the Earth's atmosphere, is comprised largely of nitrogen, oxygen and carbon dioxide. Its chemical composition differs very little from that of the innermost layers of... More » Science Earth Science Atmosphere