Physical and human causes

1

What is climate change?

2

Which of the following is human evidence of climate change?

3

Which of the following is NOT a greenhouse gas?

4

The burning of fossil fuels releases which greenhouse gas?

5

Which of the following has NOT been a source of CFCs?

6

Which of the following is a PHYSICAL cause of climate change?

7

Which of the following is a HUMAN cause of climate change?