Biodiversity

Question 1

biodiversity def

Answer 1

variety of organisms living in an area

Question 2

three types of biodiversity

Answer 2

• habitat - no. of differnt habitats found within an area
• species biodiversit- species richness- no of def species living in an area/species eaveness- abundance, the number of individuals within the species living in a community
• genetic biodiversity- variety of genes that make up a species

Question 3

increase reliability when taking a sample

Answer 3

use random sampling, remove sampling bias, use a large sample size, remove the effects of chance

Question 4

measuring abiotic factors

Answer 4

• wind speed - anemometer ms-1
  light intensitsy- light meter Ix
  humidity - humidity sensor mgdm-3
  dissovled oxygen probe mgdm-3

Question 5

techniques to gather sampling of organisms in habitat

Answer 5

• quadrat
  sweep nets
  pitfall traps
  pooters

Question 6

what

what is a keystone species

Answer 6

have significant effect on ecosystem✓
many other species rely on activity of beavers✓