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Lesson 3 Vocabulary
| Term | Definition |
|---|---|
| Evaporation | the process during which liquid water changes into a gas called water vapor |
| Condensation | the process during which water vapor changes into liquid water |
| Precipitation | Water that falls from clouds to the earth's surface |
| Nitrogen fixation | the process that changes atmospheric nitrogen into nitrogen compounds that are used by living things |
| Atmosphere | the layer of air that surrounds a planet, like Earth, which is made of gases we need to breathe |