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| An area under the ground where there is water |
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| The process in which carbon cycles between the atmosphere, oceans, and living organisms; includes the processes of photosynthesis, decomposition, and respiration |
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| A gas in the atmosphere that plants "breathe in" and use to make their own food |
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| The change in a substance from a gas to a liquid |
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| Continuous flow of air, water, or electric charge |
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| A sequence of events that reoccur over and over |
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| The process by which a liquid becomes a gas |
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| A mixture, usually including manure and nitrogen, which is spread on or worked into soil to increase its nutrients and supports plant growth |
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| The smallest part of a substance that has all the properties of the substance |
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| The circulation of nitrogen; nitrogen from the soil is absorbed by plants, which are then eaten by animals that digest the food and poop it out (waste) returning the nitrogen back to the soil |
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| The most abundant gas in the atmosphere; 78%of the atmosphere |
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| A gas in the atmosphere that animals breathe in and need to live |
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| A deposit on Earth of hail, mist, rain, sleet or snow; a result of condensation |
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| Energy that comes from the Sun |
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The release of water vapor from the leaves of plants |
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| The lowest layer of Earth's atmosphere where most weather occurs |
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| The process by which water is renewed and used over and over again on the Earth |
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