text: Compost: A Natural Cycle 
  Composting is a natural process in which micro- 
  organisms and macro-organisms break down organic 
  material (leaves, twigs, grass, etc.) into a dark crum- 
  bly soil amendment. Modern compost facilities use 
  the same natural biological composting process. 
  Their controlled-temperature process works faster, 
  breaks down pesticide residues, and also kills weed 
  seeds and plant diseases. 