| 1. | | combination of smoke and air |
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| 2. | | Is the managing resources to be used wisely |
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| 3. | | It is round representation of the earth |
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| 5. | | occurs when the moon, the earth, and the sun are in line with one another |
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| 6. | | scientists who study rocks and soil |
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| 7. | | the energy from the Earth's heat |
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| 8. | | the gas part of the earth |
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| 9. | | the increase of the earth's average temperature due to a buildup of greenhouse gases in the atmosphere |
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| 10. | | the layer in the atmosphere where most of the weather occurs |
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| 11. | | the line of 0 degrees longitude |
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| 12. | | the moon cannot be seen from the earth because the earth covers it |
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| 13. | | the most abundant gas in the earth's atmosphere |
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| 14. | | the movement of the air from the land to the sea |
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| 15. | | the movement of the earth on its own axis |
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| 16. | | the outermost layer of the atmosphere |
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| 17. | | the process of breaking down rocks in to smaller pieces |
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| 18. | | the top layer of the earth's surface |
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| 19. | | the umbrella of the earth that protects us from ultra violet rays given off by the sun |
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| 20. | | these are lines that go from north to south |
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| 21. | | these are lines that runs from west to east |
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| 22. | | these are natural solids usually formed as crystals that are found in rocks |
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| 23. | | two factors that can change dead plant animals to coal. |
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