Env Sci Ch 10 Test Biodiversity

The number and variety of species on Earth is called

• Biodiversity
• Conservaton
• Hybrid
• Germ-plam

Supports the conservation and sustainable development of ecologically unique areas. Example- recreation

• Biodiversity hotspots
• captive breeding
• Germ-plasm banks
• ecotourism

Mass Extinction includes

• death of many species of a long period of time
• death of a few species over a long period of time
• death of many species over a short period of time
• death of a few species of a long period of time

A population in which inbreeding takes place may be prone 

• increased biodiversity
• decreased biodiversity

The current rate of extinction is

• slowing down
• the result of natural processes
• the result of human actions

The fact that organisms are adapted to survive in particular environments helps to explain why

• habitat destruction accounts for for most extinctions
• captive-breeding programs are often ineffective
• non-native plant species never flourish in new areas
• compromise is impossible on environmental issues

The level of biodiversity that involves a variety of habitats and communities is

• genetic diversity
• species diversity
• ecosystem diversity
• population diversity

Which of the following is NOT a reason for preserving biodiversity

• discovering new chemical that can be used in industries
•  isolating genetic material so it can be incorporated into existing crops
• supplementing the world's food supply through agriculture
• preventing natural evolution

A species that is critical to the functioning of an ecosystem is called a(n)

• endemic species
• exotic species
• invasive species
• keystone species

Fire ants in the southeastern US are classified as

• exotic species
• keystone species
• threatened species
• endemic species