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Definition
| The moisture content of air. |
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Definition
| A combination of temperature and humidity |
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Definition
| The mass of water vapor contained in a certain amount of air |
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Definition
| The ratio of water vapor contained in a certain amount of air at a given temperature to the mass of water vapor the air could hold at that temperature, expressed as a percentage |
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Definition
| The process by which certain gases (principally water vapor, carbon dioxide, and methane) trap heat that radiates from earth. |
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Definition
| If the concentration of carbon dioxide (and other greenhouse gases) were to increase to much, the earth would get to warm. |
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Definition
| (ppm) The number of molecules (or atoms) of a substance in a mixture for every one million molecules (or atoms) in that mixture. |
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Definition
| A term commonly used to refer to the device that converts most of the carbon monoxide in the exhaust of an automobile into carbon dioxide. |
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Term
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Definition
| When the benefit achieved by a certain action is worth the cost involved |
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