Photosynthesis (Atmosphere to Biosphere)Consumption (Biosphere to Biosphere)
Decomposition (Biosphere to Geosphere)
I start off my journey in the beautiful blue skies as carbon dioxide
Fossilization (Geosphere to Geosphere)
I am absorbed by a plant during photosynthesis. The plant is then consumed by a land animal.
Natural Gas (Geosphere to Atmosphere)
When the animal dies its body decays and becomes a part of the soil.
Atmosphere
I travel along the river in the soil and join a layer of sediment. After millions of years, multiple layers of sediments gather above me and the sediment around becomes compressed and heats up.
The compressed and heated sediments form natural gas and petroleum. When it is extracted from the earth I happen to leak out and escape back into the atmosphere.
After millions of years and an exciting adventure, I return home