| A | B |
|---|
| hazardous wastes | wastes harmful to humans & the environment |
| pollution | presence of harmful substances in the environment |
| CFC's | chemicals that destroy the ozone |
| radioactive wastes | hazardous wastes that take hundreds or thousands of years to become harmless |
| renewable resources | can be used again & again |
| nonrenewable resources | can only be used once |
| overpopulation | occurs when the # of individuals becomes so large that they can't get all the resources they need |
| biodiversity | variety of live |
| biodegradable | can be broken down by the environment |
| recycling | breaking down trash & using it again |
| resource recovery | transforming garbage to electricity |
