Changes

The nitrogen, air, and water provide a favorable environment for the microorganisms to make the compost. A small amount of nitrogen fertilizer can add sufficient nitrogen to the compost. Nitrogen fertilizers can be purchased at many hardware stores, feed stores, or nurseries.

The nitrogen, air, and water provide a favorable environment for the microorganisms to make the compost. A small amount of nitrogen fertilizer can add sufficient nitrogen to the compost. Nitrogen fertilizers can be purchased at many hardware stores, feed stores, or nurseries.

Air is the only part which cannot be added in excess. Too much nitrogen fertiliser can kill microbes; too much water causes insufficient aeration in the pile. Turning the pile helps with aeration.

Air is the only part which cannot be added in excess. Too much nitrogen fertiliser can kill microbes; too much water causes insufficient aeration in the pile. Turning the pile helps with aeration.  Aeration is vital because the organisms in the compost are aerobic which means they need air in order to do their jobs.

==Biology==

==Biology==