process in which a large population declines in number, then rebounds the number and relative abundance of species in a biological community variety of habitats, living communities, and ecological processes in the living world Variability in the genetic makeup among individuals within a single species a species whose impact on its community or ecosystem are much larger and more influential than would be expected from mere abundance a form of tourism that supports the conservation and sustainable development of ecologically unique areas event in which many types of living things become extinct at the same time illegal hunting of protected animals plants and animals that have migrated to places where they are not native species that are carried to a new location by people

1. bottleneck

process in which a large population declines in number, then rebounds

2. species diversity

the number and relative abundance of species in a biological community

3. ecosystem diversity

variety of habitats, living communities, and ecological processes in the living world

4. genetic diversity

Variability in the genetic makeup among individuals within a single species

5. keystone species

a species whose impact on its community or ecosystem are much larger and more influential than would be expected from mere abundance

6. ecotourism

a form of tourism that supports the conservation and sustainable development of ecologically unique areas

7. mass extinction

event in which many types of living things become extinct at the same time

8. poaching

illegal hunting of protected animals

9. invasive species

plants and animals that have migrated to places where they are not native

10. exotic species

species that are carried to a new location by people.