A | B |
conservation | use resources wisely so they last longer |
acid raid | pollutants in air mix with rain and fall to earth |
ozone | substance in atmosphere that blocks UV radiation |
global warming | caused by the greenhouse effect |
recycle | to reuse precious resources more than one time |
coastal erosion | partially caused by melting ice caps |
contour farming | conserves soil by plowing across slopes |
terracing | conserves soil by flattening hillsides |
Earth Day | began in April of 1970 |
pollution | can make air, water, soil, and oceans unhealthy of unuseable |
Three Mile Island | PA nuclear plant damaged in 1979 |
Chernobyl | Ukranian nuclear plant that exploded in 1985 |
greenhouse effect | certain gases in atmosphere trap heat radiation |
endangered species | plants or animals on the verge of extinction due to pollution and habitat loss |
extinction | whan a plant of animal species ceases to exist |
CFC | chloroflourocarbon - one of the ozone destroying chemicals |
greenhouse gases | include carbon dioxide and methane |
overfishing | has drastically reduces seafood supply in parts of the world |
rainforest destruction | could reduce world's oxygen supply |
flood control dams | can reduce silt supplies to downstream areas |