Unit 3 Key area 8

Question 1

Naturalised species that has spread rapidly and has outcompeted native species.

Answer 1

Invasive

Question 2

Foreign species that has been cultivated intentionally or released accidentally by human activities.

Answer 2

Introduced

Question 3

Non-native species that has established itself within wild communities.

Answer 3

Naturalised

Question 4

Removal and use of species at a rate that exceeds their maximum rate of reproduction.

Answer 4

Over exploitation

Question 5

Return to and resettlement in a habitat after local extinctions.

Answer 5

Recolonisation

Question 6

Cause of the bottleneck effect, typically a natural disaster.

Answer 6

Bottleneck event

Question 7

Narrow strip of quality habitat by which a species can move between disconnected habitat fragments.

Answer 7

Habitat corridor

Question 8

Formation of several fragments whose total surface area is less than that of the original habitat.

Answer 8

Habitat fragmentation

Question 9

Result of the wiping out of a significant percentage of a population and its genetic diversity, leaving it ill-equipped to adapt to environmental change.

Answer 9

Bottleneck effect