Answer:
The carbon cycle. .
Explanation:
The cycling of carbon dioxide in photosynthesis and cellular respiration are main components of the carbon cycle. Carbon is also returned to the atmosphere by the burning of organic matter (combustion) and fossil fuels and decomposition of organic matter. brainleist please! :)
The combustion of methane is given by
[tex]\\ \tt\hookrightarrow CH_4+O_2\longrightarrow CO_2+H_2O[/tex]