Biodiversity Review

the variety of life in the world or in a particular habitat or ecosystem.

• biodiversity
• genetic variation
• habituation
• endemic species 

species on which other species in an ecosystem largely depend

• endemic species
• threatened species
• endangered species
• keystone species

tourism directed toward exotic, often threatened, natural environments, especially to support conservation efforts and observe wildlife.

• exotic tourism
• ecotourism
• conservation tourism
• biotourism 

any species which are vulnerable to endangerment in the near future

• alien species
• threatened species
• endemic species
• endangered species 

are species of plants or animals that are growing in a nonnative environment, also called alien species

• exotic species
• endangered species
• threatened species
• keystone species

species being unique to a defined geographic location, such as an island

• native species
• exotic species 
• alien species
• endemic species

Which of the following is NOT a reason biodiversity is important

• provides genetic variety in crops
• provides different materials for human use
• provides more oxygen
• provides more types of homes for animals

Which of the following best describes "biodiversity"?

• .Different planets in our solar system.
•  Endangered species.
• Biographies about famous biologists.
• The variety of all life on earth.

What is background extinction?

• extinction that occurs at a steady rate from natural forces
• extinction that occurs behind another extinction
• Extinction of  an exotic species
• extinction on only one continent 

What is the major cause of the high rate of extinction seen today?

• overpopulation
•  disease
• human activity
• natural habitat loss