Biodiversity

Question 1

Define biodiversity

Answer 1

Variety of all living species of organisms on earth

Question 2

Reasons for deforestation

Answer 2

Land is used for rice fields
- grazing cattle
- growing crops
= used to make biofuels

Question 3

Ways water can be polluted and effects

Answer 3

• sewage being released into waterways
• rivers and streams polluted by fertilisers from farms
  = cause dissolved o2 levels to fall
  = kill aquatic organisms
• toxic chemicals released from factories

Question 4

Uses of land

Answer 4

Houses factories shops Farms
= less land for animals
= less habitats

Question 5

Describe a peat bog

Answer 5

Contain large amounts of dead plant materials
- conditions mean decay is very slow
- contain large amount of trapped carbon

Question 6

Uses of peats

Answer 6

To produce cheap compost for gardens

Question 7

Problem with peat

Answer 7

Once peat has been extracted and used for compost it begins to decay
= releases large amounts of co2 into the atmosphere
= increase climate change

Question 8

How to reduce negative effects of humans on biodiversity

Answer 8

Breeding programs for endangered species
Protect land
Reduce deforestation
Reduce co2 emissions
Recycling waste