| A | B |
|---|
| water pollution | any change in water that makes it harmful to living things |
| sewage | human wastes from homes |
| bacteria | microscopic organisms that cause disease |
| pollutant | a material that causes pollution |
| thermal pollution | air or water unnaturally heated or colled to cause harm to living things |
| ground water | rain or snow that sinks into the earth and is stored there |
| dilution | to weaken a mixture by adding more water |
| bio-degradable | a material that can be broken down by bacteria to make it decay |
| carbon monoxide | odorless, colorless, poisonous gas |
| sulfar dioxide | poisonous gas of sulfar and oxygen |
| acid rain | air pollution mixed with rain to form corroding liquid |
| scrubber | device that removes harmful chemicals from smoke |
| fossil fuels | coal, oil, natural gas |
| conservation | the act of keeping our natural resources |
| toxic waste | poisonous chemical wastes |
| landfill | area where trash buried |
| recyucle | to use again |
| reclamation | process that makes disturbed land useful again |
| noise pollution | constant loud noises |
| decibal | measurement of sound |
