chapter 6

Question 1

Biodiversity

Answer 1

The variety of plant and animal life in an ecosystem.

Question 2

Succession

Answer 2

A series of gradual changes that result in the replacement of one community of plants by another.

Question 3

Primary succession

Answer 3

Succession that develops a community of plants and animals in an area where no living things existed before, for example a receding glacier or new volcanic land.

Question 4

Secondary succession

Answer 4

Succession that develops a community in an area after it has been disturbed.

Question 5

Endangered species

Answer 5

Species that are at risk of becoming extinct due to either reduction in numbers or an environmental threat.

Question 6

Extinction

Answer 6

The complete disappearance of a species from anywhere on Earth

Question 7

Invasive species

Answer 7

A species that has been introduced (accidentally or purposefully) into an area where it did not exist before; often reproduces so aggressively that it replaces some of the original species.

Question 8

Native species

Answer 8

Species that occur naturally in an area.

Question 9

Steward

Answer 9

A person who carefully manages a resource by taking responsibility for their actions and educating others.