Maintaining Biodiversity
- Biodiversity: The number of different species in a given area.
- Factors that affect biodiversity in an ecosystem include area, climate, and diversity of niches.
- Keystone Species: A species that influences the survival of many other species in an ecosystem.
- Extinction: The disappearance of all members of a species from Earth.
- Endangered Species: Species in danger of becoming extinct.
- Threatened species: Species that could become endangered in the near future.