Adaptation is the evolutionary process whereby a population becomes better suited to its habitat.

An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Some introduced species are damaging to the ecosystem they are introduced into, others negatively affect agriculture and other human uses of natural resources, or impact on the health of animals and humans.

Originating from the activity of humans.

Appropriate technology is technology that is appropriate to the environmental, cultural and economic situation it is intended for. It usually describes technologies which are suitable for use in the majority world (or "developing nations").

Breeding and rearing of fish, shellfish, or plants in ponds, enclosures, or other forms of confinement in fresh or marine waters for the direct harvest of the product.