Direction: Complete the following sentences.Choose your answer inside tbe box below.

Smoke
layer
greenhouse
sulfur dioxide
slash burn
contaminated
waste
troposphere
deforestation
increase
ozone

1. Global warming is an ______
in the average temperature of earth's atmosphere.

2.__________ gases cause Greenhouse effect.

3. Ozone depletion occurs when the _______ is destroyed by chlorofluorocarbons.

4. Incineration is a treatment process that involves the combustion of organic substances contained in _____
materials.

5. Pollution happens when soil, water, and air are _______
with harmful subtances.

6. Kaingin system is also called as _____ and ____ system.

7. Nitrogen oxide and _________ when combined with air moisture cause Acid rain.

8. Methane amd carbon dioxide are gases from buring fuels that trap heat in the _____.

9. Smog is a combination of ____ and fog.

10. __________ is the process by clearing down the forest.

Pa help naman po.Salamat po.
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