21.3 - Preserving Biodiversity

Question 1

Mass extinction

Answer 1

Over half of all species disappearing

Question 2

Background extinction rates

Answer 2

1 species extinction per million species year : 10 million years = 10 species extinction

Question 3

Species-area relationship/curve

Answer 3

Larger habitat = more species

Question 4

Conservation of Biodiversity - Changing human behavior

Answer 4

Legislations - international treaties or national/state laws

Question 5

Conservation of preserves

Answer 5

Area dedicated for certain species/organisms to develop without human interruptions (Often around biodiversity hotspots)

Question 6

Biodiversity hotspots

Answer 6

Geographical areas with a high # of endemic species (Certain species that are only in specific regions of the world: panda, tigers)

Question 7

Habitat restoration

Answer 7

Methods in order to maintain/restore biodiversity, ensuring keystone species are included

Question 8

Keystone species

Answer 8

Most important species that the whole ecosystem depends on; Results in a ripple effect without them

Question 9

Captive breeding

Answer 9

Inefficient, too artificial/dependent on human support - unable to survive in the wild