| Farming strategy in which large fields are planted with a single crop variety year after year | | |
| A necessity of life which can regenerate quickly and that is replaceable | | |
| Wearing away of the surface soil by water and wind | | |
Process caused by a combination of poor farming practices, overgrazing, and drought that turns productive land in areas with dry climates into deserts
| | |
| A necessity of life (resource) which can NOT be replenished by natural means | | |
| The destruction of forests | | |
| A mixture of chemicals that occurs as a gray-brown haze in the atmosphere | | |
Any harmful material that can enter the biosphere through land, water, or air
| | |
| Splitting of ecosystems into small areas | | |
Increasing concentration a harmful substance in organisms at higher trophic levels in a food chain or web
| | |
| Plants or animals that have migrated or been introduced into places where they are not native and for which there are no natural predators or parasites to control their population | | |
The total set of greenhouse gas emissions caused directly and indirectly by an individual, organization, event or product
| | |
Refers to any source of usable energy intended to replace the undesired consequences of using fossil fuels as an energy source
| | |
| The sum total of the variety of organisms in the biosphere; It is a measure of the health of an ecosystem | | |