bacteria or fungi
decomposition
Organic matter is converted into animal and microbial tissue during decomposition. This matter can be then used to fertilize the soil.
It is returned to the atmosphere as a gas.
That would most likely be nitrogen, which is created during the decomposition of organic items.
Decomposition is the process of breaking down organic substances. It is very important to note the word "Organic". Plants and animals are made up of around 18% carbon, therefore during their decomposing process, they release the carbon stored in them.
carbon dioxide: a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances
a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis
Decomposition: is the process by which organic material is broken down into simpler forms of matter. Therefore the energy in both is lessening/wearing away. The energy is less then it would be if it was up and running.
When organic matter decomposes, a significant portion of the carbon is released into the atmosphere as carbon dioxide (CO2) through the process of respiration by decomposer organisms. Some of this carbon can also be converted into other forms such as methane (CH4) during anaerobic decomposition. However, a small proportion of carbon can be retained in the decomposing material as organic matter in the form of humus or stored in the soil.
Energy is released during a decomposition reaction.
you can over come the problem of decomposition of certain organic liquid by rarefaction atmospheric pressure that the boiling point of liquid become less than of its previous that prevent decompose it before its boiling.
When an animal dies, bacteria release carbon in the body during the process of decomposition.