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chapter 3-4
| Term | Definition |
|---|---|
| crust | the thin layer of rock that forms earth outer surface on land and in the ocean |
| mantle | the layer of very hot but mostly solid rock beneath Earth's crust |
| core | the layer of earths below the mantle |
| tectonic plates | one of the rigid layers of the lithosphere |
| landforms | a mountain,island, or continent formed by the collisions and separations of tectonic plates |
| deposition | the movement and accumulation of eroded soil |
| evaporation | a change in state from a liquid to a gas |
| transpiration | the release of water vapor by plants through their leaves |
| precipitation | the return of water from the atmosphere to Earth's surface in the form of rain,snow,sleet,or hail the process of separating a solid substance from a solution |
| condensation | a change in state from a vapor to a liquid |
| aquifers | a sponge like formation of rock,sand,or gravity that holds water |
| groundwater | fresh water found below earth surface |
| law of conversations of matter | the principle that states that matter can change form but cannot be created or destroyed |
| nutrients | matter that organisms need to carry out their life processes |
| biogeochemical cycles | the circulation of nutrients through the atmosphere also called nutrient cycle |
| primary producers | an organism that can capture energy from the sun or from chemicals and store it also called autotroph |
| photosynthesis | the process by which primary producers use sunlight to convert carbon dioxide and water into sugars,releasing oxygen |
| consumers | an organism that relies on other organism for energy and nutrients also called heterotroph |
| decomposers | an organism that breaks down nonliving mater into simple parts that can then be taken up and reused by primary producers |
| cellular respiration | the process by which organisms use oxygen to release the chemical energy of sugars,producing dioxide and water |
| eutrophication | the introduction of phosphorus and nitrogen into a body of water that leads to an overgrowth of algae and other producers |
| nitrogen fixation | the conversion of nitrogen gas into ammonia |