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Soil
| Question | Answer |
|---|---|
| root | a plant organ that takes in water and nutrients from the soil |
| carbon cycle | a natural cycle in which carbon compounds, mainly carbon dioxide, are incorporated into living tissue through photosynthesis and returned to the atmosphere by respiration, decay of dead organisms, and the burning of fossil fuels |
| decompose | to break down into simple nutrients |
| sprout | (n) the young plant that comes out of a seed; (v) to come out of or grow from a seed |
| erosion | the removal of weathered rock material. After rocks have been broken down, the small particles are transported to other locations by wind, water, ice, and gravity |
| geosphere | Earth's crust, both beneath the oceans and continents, as well as the mantle and inner and outer core |
| moisture | a measure of how much water is in something |
| environment | all the living and nonliving things that surround an organism |
| landform | a large natural structure on the earth's surface such as a mountain, a plain, or a valley |
| geology | the study of rocks and Earth |
| decay | to break down or wear away |
| weathering | the breaking down of rock into smaller pieces by the action of wind, rain, and temperature change |
| soil | the outer layer of Earth's crust in which plants can grow; made of bits of dead plant and animal material as well as bits of rocks and minerals |
| plant | an organism that is made up of many cells, makes its own food through photosynthesis, and cannot move; a member of kingdom Plantae |
| deposit | an amount of rock or soil that has been laid down in an area |
| root hair | a very small part of a plant root that takes water and nutrients from the soil |
| absorb | to take in matter or energy |
| nutrients | a substance such as a fat, a protein, or a carbohydrate that a living thing needs to survive |
| microorganism | an organism that is too small for people to see with only their eyes |