Ecosystem Challenges

Biodiversity simply means ____________________.

• a variety of life

• a variety of plants

• a variety of animals

• a variety of human race

Endangered animals are _____________________.

• at risk of extinction

• captured in the zoo

• found on only two continents around the world

• at risk of contracting a virus

Deforestation leads to a decrease in atmospheric carbon dioxide.

• True

• False

Using Earth’s resources in a way that doesn’t permanently harm the planet.

• sustainability

• reused material

• wildlife

• Artificial habitat building

Species that are clearly critical to the functioning of an ecosystem are known as

• biodiversity

• keystone species

• main species

• native species

A species that is likely to become extinct if protective measures are not taken immediately is known as

• extinct species

• endemic species

• keystone species

• endangered species

a species that is not native to a particular region and has no natural predators and little competition

• consumer species

• producer species

• invasive species

• adapted species

An endemic species is

• exotic and found everywhere

• exotic and found only in certain regions

• native and found only in a limited area

• native and found everywhere

Succession that occurs in areas that previously didn't support life, such as on rocks or ice

• tangential succession

• primary succession

• secondary succession

• quaternary succession

A common type of succession that occurs where an event such as a forest fire has occurred, or a farmer's field has been abandoned is called

• common succession

• primary succession

• secondary succession

• Quaternary succession