lớp 11 unit 4

2. The _______(emissions / carbon dioxide) from cars and motorbikes are a major cause of air pollution.

4. Greenhouse gases are a major cause of _______. (carbon dioxide / global warming)

3. We must reduce _______( global warming / carbon dioxide) in the atmosphere to save our planet.

1. Billions of _______(tonnes/emissions) of pollution are released into the atmosphere every year.

5. We must stop using _______(tonnes/fossil fuels) like coal and oil.