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Composting is the controlled, aerobic biological decomposition of organic materials by microorganisms; compost is a dark, earthy-smelling, biologically stable soil amendment produced by the decomposition of organic materials. The composting process requires a ratio of carbon-rich materials, such as dry leaves or wood chips, to nitrogen-rich materials, such as grass clippings or food scraps. Maintaining adequate moisture, oxygen, particle size, and temperature ensures microorganisms effectively break down organic materials into quality compost. (责任编辑：) |