Index
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Pollution Problems
Crossword
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Check
Across:
1.
Product of burning sulphur and oxygen
2.
Tiny bits of material
3.
Some gases result in the _____ effect
4.
Fuels that captured energy from the Sun millions of years ago.
5.
Heat radiation that keeps the temperatures high.
6.
Result of burning carbon with oxygen
8.
A sedimentary rock that is used as a fuel.
9.
This could threaten our future on this planet.
Down:
1.
Acid in acid rain.
3.
Lots of dust causes this.
7.
A product of burning hydrocarbon fuels.
OK
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