Resulting from plant scrap piles under water and muck When there is a change of the crust is a deposit in the depths. With heat and pressure in a gas-oxygen conditions with little or no digestion occurs so slowly.
The humus deposition under water and mud. When the change was deposited in the depths of the earth. Heat and pressure in the presence of little or no oxygen. The degradation slowly.
Caused by litter deposition under the water and mud. When there is a change of the crust is buried in depth. Heat and high pressure in the presence of oxygen gas, little or no The digest slowly breaking.