Question

Choose the correct words to fill up the blanks
1. _____________ is the substance that causes pollution. (pollutant, pollution)
2. Sandstorm and forest fires pollute the ____________. (air, water)
3. _________ protects the earth from the harmful radiation of the sun. (ozone layer, acid
rain)
4. Ozone is a form of ___________. (Nitrogen, Oxygen)

Answer 1

Answer:

1) pollutant

2) air

3) ozone layer

4) oxygen

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Answer 2

Answer:

1. Pollutant
2. water
3. ozone layer
4. Nitrogen