Fill in the gaps with the correct options. There are two extra words in the task.

1) There are different types of human-made air ... .
2) Smog is a type of air pollution that reduces visibility and has a harmful impact on human ... .
3) We can limit ... pollutants, smog and greenhouse gases by decreasing the use of fossil fuels.
4) Warmer weather also ... to longer pollen seasons.

5) Climate ... creates higher temperatures.