| A | B |
|---|
| acid rain | rain that is more acicidic than normal caused by pollution in the air |
| biodiversity | the number an variety of organisms found within a specified geographic region |
| bi-product | something made to produce something else |
| emissions | substances discharge into the air |
| exhaust | the escape of steam or gases from the cylinder of an engine |
| fallout | the slow descent of minute particles of debris in the atmosphere following an explostion, especially the descent of radioactivedebris after nuclear explostions |
| green house effect | the phemon whereby the earth's atmosphere traps solar radiartion caused by the presence in the atmosphere of gases such as carbon dioxide,water vapor, and methane that allow incoming sunlight to pass through but absorb heat radiation back from the earth's surface |
| groundwater | water thta fills that fills the cracks in pores in underground soil and rock layers |
| irrigation | supplying water to areas of land to make them suitable for growing crops |
| nuclear disaster | a realese of radioactive contamination |
| ozone layer | layer of the upper atmosphere where most atmospheric ozone is concentrated |
| pesticide | a chemical intended to kill insects and other orginisms that damage crops |
| radioactive | spontaneous emission of radiation as a consqence of a nuclear reaction |
| surface water | water collecting on the ground or in a steam,river,lake,wetland,or ocean |
