Organic matter added to soil to aid production. Includes manure and compost.

Agriculture carried out exclusively for the purpose of survival, primarily without sale of crops. May be organic or sustainable, but not necessarily.

Vehicle emissions are chemicals produced by an internal combustion engine which are considered hazardous, primarily carbon monoxide, hydrocarbons, and nitrogen oxides.

A natural habitat containing water, such as a marsh, swamp, or bog. Wetlands act as filters for rivers and streams and as a storage area for excess water during flooding periods.

The gradual shift of a population from rural (country) living to city life.

A lifestyle which excludes animal flesh, animal products (eggs and dairy) and usually excludes honey and alternate use of animal products (silk, leather, wool, gelatin).

A wide ranging term, usually applied to a process which can be repeated over and over without causing negative environmental effects or having other harmful effects (financial, personal, etc.).

Farming based on practices in use for many centuries, including crop rotation, use of animal manure as fertilizer, and the use of animal power.

An economic fund of the Environmental Protection Agency intended exclusively for clean-up of major hazardous waste sites.

A process of controlling waste by changing it at the production level.