B18

Question 1

Biodiversity

Answer 1

Biodiversity is the variety of all the different species of organisms on earth, or within an ecosystem.

Question 2

3 ways in which pollution can occur

Answer 2

• in water, from sewage, fertiliser or toxic chemicals
• in air, from smoke and acidic gases
• on land, from landfill and from toxic chemicals.

Question 3

Deforestation occurs due to…

Answer 3

• provide land for cattle and rice fields
• grow crops for biofuels.

Question 4

What has an increased population and standard of living lead to?

Answer 4

increasingly more resources are used and more waste is produced