SJ - Chp 7 Rocks & Soil Vocabulary
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9 terms
Terms | Definitions |
|---|---|
 rock | natural, solid, non-living material made of one or more minerals |
| mineral | natural material that forms from non-living matter |
| soil | the part of Earth's surface consisting of humus and weathered rock in which plants grow |
| nutrient | thing plants need in order to grow |
| igneous rock | rock that forms when melted earth materials cool and harden |
| metamorphic rock | rock that forms when existing rock is changed by heat and pressure |
| sedimentary rock | rock that forms when small pieces of earth materials collect and become bound together |
| decay | to break down, or rot |
| loam | soil that contains a mixture of humus and mineral materials of sand, silt, and clay |
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