Impact of human activity

1

What is one effect of the human population increasing?

2

Sulfur dioxide is released when fossil fuels burn. What does sulfur dioxide cause?

3

Carbon dioxide is released when fossil fuels burn. What is the main problem caused by carbon dioxide?

4

Which of the following is likely to be a result of global warming?

5

Which of these is a use for water resources on Earth?

6

Approximately how many people are alive on Earth?

7

What term is used for the process of cutting down large numbers of trees?

8

What is one effect of burying rubbish in landfill sites?

9

Which of the following is not a greenhouse gas?

10

What would happen if there was no greenhouse effect on Earth?