| A | B |
|---|
| social network | the people with whom you interact and look to for friendship, information, and social support |
| community service organization | official groups whose members act or unite for a common purpose |
| mixed-use development | building homes closer to businesses and schools |
| urban sprawl | building homes in suburbs away from business districts |
| pollution | the presence or release of substances--called pollutants--into the environment in quantities that are harmful to living organisms |
| fossil fuels | energy-rich substances mined from deep in the earth |
| smog | a brown haze that forms when air pollutants react in the presence of sunlight |
| ozone layer | a section of the atmosphere that contains naturally occuring ozone; absorbs ultraviolet light from the sun |
| asbestos | fibrous material that was used in fireproofing and other building materials; can cause lung cancer if inhaled |
| radon | naturally occuring radioactive gas; serious indoor air pollutant |
| biodegradable waste | waste that can be broken down by microorganisms |
| hazardous waste | any waste that is either flammable, explosive, corrosive, or toxic to humans or other living things |
| landfill | a permant storage area where garbage and other wastes are deposited and covered with soil |
| recycling | the process of reclaiming raw materials from discarded products and using them to create new products |
| sewage | the waste material carried from toilets and drains |
| runoff | the water that drains from land into streams |
| conservation | the protection and preservation of the natural environment by managing natural resources wisely and developing land for new construction responsibly |
| civic engagement | the lvel of involvement that average citizens have in the planning and decision-making that affects their community |
| consensus-building | the process by which a community arrives at an agreed-upon vision for the future |
