what affects biodiversity ?

Question 1

what are 3 factors that affect biodiversity ?

Answer 1

• human population growth
• increased use of monoculture in agriculture
• climate change

Question 2

what is declining as a result of human activities ?

Answer 2

• the number of species
• the genetic diversity of many species

Question 3

what happens as a result of human population growth ?

Answer 3

• the demand for more food and consumer goods
  –> which has a greater and greater effect upon other species

Question 4

what are 5 things that happens as a result of human population growth ?

Answer 4

• we have learned to use the environment to our advantage
• we alter ecosystems to provide ourselves with food
  -we destroy and fragment habitats
• we are using more and more of the Earth’s resources
• we pollute the atmosphere

Question 5

how do humans harm species ?

Answer 5

• directly or indirectly and this can lead to extinction

Question 6

what is the expected population by 2050 ?

Answer 6

8.3 and 10.9 million

Question 7

what does habitat loss cause ?

Answer 7

• deforestation

Question 8

what does overexploitation cause ?

Answer 8

• resources being used up faster than can be replenished
  e.g. some fish species being overfished

Question 9

what does urbanisation cause ?

Answer 9

• populations are unable to breed as they are isolated from each other

Question 10

what does pollution cause ?

Answer 10

• high levels of fertiliser flow into a river decreases fish populations

Question 11

what does agriculture have a huge effect on ?

Answer 11

the biodiversity of natural habitats