biodiversity and threats to biodiversity

Question 1

what is biodiversity?

Answer 1

the number and variety of organisms in a particular ecosystem

Question 2

why do we measure biodiversity?

Answer 2

higher biodiversity = better sustainability

Question 3

what are 4 benefits to biodiversity?

Answer 3

• high ecosystem sustainability
• new material / new medicine
• enjoy the nature
• inspire people

Question 4

what 3 things does biodiversity focus on?

Answer 4

• numbers (# of species)
• evenness (population distribution)
• difference (genetic or behavioural diversity)

Question 5

what is a biodiversity hotspot?

Answer 5

a place where there is an exceptionally large number of species in a relatively small area

Question 6

what 2 things lead to habitat change / habitat loss?

Answer 6

• deforestation

- constructing farms, housing, roads or dams

Question 7

what 2 things lead to overexploitation?

Answer 7

• overhunting / overfishing

- too much demand on water

Question 8

what 3 things lead to pollution?

Answer 8

• increase level of carbon dioxide
• use of fertilizers
• use of pesticides

Question 9

what 2 things lead to invasive species?

Answer 9

• imports or shipments of goods from other countries

- pets released into the wild

Question 10

what can lead to climate change?

Answer 10

global warming

Question 11

what 2 things can lead to extinction?

Answer 11

• natural selection of nature

- arrival of humans change abiotic / biotic features of an ecosystem