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7-7:7 Enviro. Change
KH_Environmental Challenges, Krystal Haltiwanger, Hardy
| Question | Answer |
|---|---|
| Megalopolises | Areas where cities have grown so large they run into each other |
| Developing countries | Countries seeking to industrialize, but still wanting to follow traditional ways. |
| Developed countries | Like United States, have long been industrialized and can offer a higher standard of living |
| Standard of living | The measure of a persons wealth and personal well-being. |
| Deforestation | The clearing of forests |
| Habitats | The special environments required for particular organisms to live |
| Desertification | The turning of fertile land into desert |
| Droughts | Long periods without rain |
| Subsistence farmers | People who grow just enough food to meet their families needs |
| Slums | The rundown, poverty-stricken portions of the city |
| Nonrenewable resources | Ex: Coal, petroleum, or natural gas. Cannot be renewed, when they run out, they will be gone forever. |
| Acid rain | Sulfur gas mixed with the air, downpours have killed many forests. |
| Greenhouse affect | Produced by gasses from factories and gas-burning vehicles |
| Chlorofluorocarbons (CFCs) | The gases used in air conditioners, refrigerators, and foam packaging. |
| Ozone layer | A thin protective layer of gas in the upper atmosphere |
| Ozone hole | Seasonal reduction of ozone over Antarctica, appears each August and reaches its largest size by October |
| Sustainable development | When the economic development does not limit the ability of future generations to meet their needs. |
| Green revolution | A solution to feeding the worlds population, provides new strains of rice, corn, and other grains that have high yields. |