EM-Agriculture and the environment, page 54
Soil is the loose surface material that covers most land. It consists of inorganic particles and organic matter.
It is made up of four groups:
Mineral particles, which is a mixture of living plants and animals and their dead remains.
Organic content, which is a mixture of living plants and animals and their dead remains.
air, which is held within the spaces between the particles and organic content of the soil.
water, which is also held within the soil pores and is the water that is available for plants to grow.
THE END