B7 Page 12

Question 0

What does sustainability mean?

Answer 0

Meeting the needs of today’s population without harming the environment so that future generations can still meet their own needs.

Question 1

Give examples in ways which humans rely on ecosystems.

Answer 1

• provide clean air,water and food (fish and games)
• provide fertile soil that’s full of mineral nutrients- needed to produce crops
• most crop production needs pollination which is done by ecosystems .

Question 2

Give a couple of ways which using natural resources is made so that it allows the the resources to be replaced naturally.

Answer 2

• fishing quotas- prevents fish getting extinct
• timber quotas
• timber companies having to plant a new tree to replace those they have cut.

Question 3

Explain how sunlight is a sustainable source of energy.

Answer 3

1) Cannot be used up by human activities-
2) used to make plants photosynthesise
3) can power equipment