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7-7.7
Environmental challenges
Question | Answer |
---|---|
Megalopolis | Areas where cities have grown so large they run into each other. |
Developing countries | Countries seeking to industrialize. |
Developed countries | Like the United States. |
Standard of living | The measure of a person's wealth and personal well-being. |
Deforestation | Is one of the by- products of a growing world population. |
Habitats | The special environments required for particular organisms to live. |
Desertification | The turning of fertile land into deserts. |
Droughts | Long period without rain. |
Acid rain | Poisonous downpours have killed forests in both North America and Europe. |
Greenhouse effect | Trap solar energy in the form of heat, the same way that a nursery greenhouse does. |
Chlorofluorocarbons | Gases used in aerosols, air conditioning, refrigerators, and foam packaging, has also raised concern among scientists. |