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Across 3. the gas phase of water (2 Words) 6. there is no concentrated ozone in this layer and its located above the stratosphere 7. term that describes the upper limit of the stratosphere 8. this layer contains most of the mass of the atmosphere (including water vapor) 10. the outermost layer of the atmosphere where helium & hydrogen gas are found 11. this layer is made up of primarily concentrated Ozone 12. term that describes the upper limit of the mesosphere

Down 1. Only substance in our atmosphere that can exist as a solid liquid or gas 2. term that describe the upper limit of the troposphere 4. the envelope of gases surrounding the earth or another planet. 5. this layer contains only a small amount of earths atmosphere that can be 1000 degrees Celsius 9. forms in the atmosphere through the process of photolysis