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Lh env. challenges

Standard 7-7.7; environmental challenges

QuestionAnswer
Megalopolis Areas were 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 Countries that have long been industrialized and can offer a higher STANDARD OF LIVING.
Standard of living The measure of a person's wealth and personal well-being.
Deforestation The clearing of forests; people have cut down forests and jungles to provide more farmland, firewood, and timber.
Habitat The special environments required for particular organisms to live.
Desertification The turning of fertile land into desert.
Droughts Long periods without rain.
Subsistent farmers Grow just enough food to meet their needs.
Slums The rundown, poverty stricken portions of a city.
Nonrenewable resources Takes millions of years to produce these fuels; when they run out they will be gone forever.
Acid rain Poisonous downpours
Greenhouse effect Gases trap solar energy in the form of heat, the same way a nursery greenhouse does.
Chlorofluorocarbons (CFCs) The gases used in aerosols, air conditioning, refrigerators, and foam packaging.
Ozone layer Absorbs most of the sun's cancer-causing ultraviolet radiation.
Ozone hole The depletion of the ozone layer.
Sustainable development Economic development that does not limit the ability of future generations to meet their needs.
Green Revolution Provided new strains of rice, corn, and other grains that have high yields.
Created by: Hisloplindsayb
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