| A | B |
|---|
| a species that is not native to a particular region | exotic species |
| any species that is likely to become endangered if it is not protected | threatened species |
| species that are very important to the functioning of an ecosystem | keystone species |
| any species whose numbers have fallen so low that it is likely to become extinct in the near future | endangered species |
| a species when the very last individual dies | extinct species |
| most unknown species belong to this group | insects |
| growing crops among native plants instead of on cleared land | sustainable land use |
| humans and familiar animals belong to this group | vertebrates |
| designed to protect groups of animal species by managing lands in a protected area | habitat conservation plan |
| critical ecosystems with high species diversity | biodiversity hotspot |
| many antibiotics are derived from chemicals that come from this group | fungi |
