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Bio 18.4
let it shine - eminem
| Question | Answer |
|---|---|
| biochemical cycles | the circulation of substances through living organisms from or to the environment |
| groundwater | water in teh soil or in underground formations of porous rock |
| water cycle | the movement of water between these various reservoirs |
| transpiration | plants take in the water through their roots and they release water and take in carbon dioxide through their leaves. animals also participate in the water cycle |
| carbon cycle | photosunthesis, plants and other autotrophs use carbon dioxide, along with water and solar energy to make carbohdrates. both use oxygen to break down carbohydrates during cellular respiration. |
| nitrogen cycle | the complex pathway that nitrogen follows in an ecosystem. |
| nitrogen fixation | the process of converting N2 gas to nitrate |
| nitrogen-fixing bacteria | transform nitrogen gas into a usable form. these bacteria live in the soil and inside swellings on the roots of some kinds of plants, such as beans, peas, clover and alfalfa. these plants supply carbohydrates 4 the bacteria & bacteria supply for the plant |
| ammonification | decomposers break down wastes that contain nitrogen which is released into the soil to be used by other organisms |
| nitrification | soil bacteria take up ammonium and oxidize it into nitrites N02 & NO3 |
| dentitrification | occurs when anaerobic bacteria break down natrates and release nitrogen gas into the atmosphere. animals get nitrates from eating plants |
| phosphprus cycle | the movement of phosphorous from the environment to organisms and then back to the envirinment |
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