Factors Affecting Biodiversity

Question 1

What are the three factors that affect biodiversity?

Answer 1

human population growth

agriculture

climate change

Question 2

How does human population growth affect biodiversity?

Answer 2

destruction of habitat e.g. deforestation
separating populations e.g. roads - populations cant interbreed
unsustainable hunting / fishing e.g. overfishing of cod
pollution

• all of this decreases in habitat biodiversity,
  species biodiversity, and genetic biodiversity

Question 3

How does agriculture affect biodiversity?

Answer 3

monoculture - cultivation of only one type of crop

more land is needed to feed growing population - increased habitat destruction
continuous monoculture causes soil depletion - reduces other plant species ability to survive

- decreases - 
habitat biodiversity,
species biodiversity
genetic
biodiversity

Question 4

How does climate change affect biodiversity?

Answer 4

• human burns fossil fuels - co2 is a greenhouse gas
• weather patterns will change - change the abundance and distribution of species
• some will become extinct
• decreases in
• habitat biodiversity
• species biodiversity
• genetic biodiversity