Ozone Crossword

(answers last page

Across 

Across 

2. A highly irritating gas that can combine with nearly all other elements

3. the average condition of the weather over a period of years

5. fog made heavier and darker by smoke and chemical fumes 

7. a suspension of fine solid or liquid particles in gas

8. the whole mass of air surrounding the earth

Down

1. The use or consumption of a resource

4. substances that can dissolve another substance

5. power produced by the sun

6. carbon dioxide is a heavy odorless _____

9. an unstable pale blue form of oxygen

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