Matching exercise

Match the items on the right to the items on the left.
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