39450233
Description
Flashcards by Trevor McKeown, updated more than 1 year ago
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Created by Trevor McKeown
over 2 years ago
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| Question | Answer |
| Resources | a physical material that humans need and value such as land, air, and water |
| Water Pollution | the release of substances into bodies of water that makes water unsafe for human use and disrupts aquatic ecosystems |
| Purification | the removal of impure elements from something |
| Fossil Fuels | compound mixtures made of fossilized plant and animal remnants from millions of years ago |
| Greenhouse Gases | gases in the earth's atmosphere that trap heat |
| Carbon Cycle | the process that moves carbon between plants, animals, and microbes; minerals in the earth; and the atmosphere |
| Carbon Dioxide | Colorless and non-flammable gas at normal temperature and pressure. Produced from breathing and from burning certain substances called fossil fuels |
| Biosphere | the region of the earth that encompasses all living organisms: plants, animals and bacteria |
| Atmosphere | A blanket of gases that surrounds Earth. It is held near the surface of the planet by Earth's gravitational attraction. |
| Smog | air pollution that reduces visibility |
| Combustion | a chemical process in which a substance reacts rapidly with oxygen and gives off heat |
| Respiration | The process by which organisms exchange gases, especially oxygen and carbon dioxide, with the environment |
| Decomposition | the process by which dead organic substances are broken down into simpler organic or inorganic matter |
| Recycling | the process of collecting and processing materials that would otherwise be thrown away as trash and turning them into new products |
| Floodplain | a generally flat area of land next to a river or stream |
| Gradient | a measurement of how much something changes as you move from one region to another |
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