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Biology Chapter 49
| Question | Answer |
|---|---|
| biodegradable | description of a substance that can he broken down by microorganisms into the essential nutrients from which it was made |
| nonbiodegradable | description of material that cannot he broken down by natural processes or is broken down extremely slowly |
| biological magnification | phenomenon in which the concentration of certain compounds in each organ ism in a food chain increases |
| smog | air pollutant consisting of a combination of smoke and fog |
| temperature inversion | condition in which a layer of cool air becomes trapped beneath a layer of warm air, keeping pollutants near the ground |
| acid rain | rain that contains droplets of acid formed when certain pollutants in the air combine with water vapor |
| greenhouse effect | condition in which carbon dioxide in the atmosphere absorbs heat radiated from the Earth, forming a kind of heat blanket around the Earth |
| hole in the ozone | layer area where little ozone is found |
| thermal pollution | type of water pollution in which heated water is pumped into the environment, often killing aquatic plants and animals |
| reforestation | planting of new trees where old trees have been cut down or burned |
| endangered species | animal or plant that is so rare it is threatened with extinction |
| recycling | process by which certain kinds of solid wastes can he processed and used again |
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