Water Pollution and Solutions
Terms in this set (13)
How can water be scarce when 3/4 of the earth is water
1. 97% percent is salt water
2. 3/4 of the fresh water is in the form of ice
3. Supplie of fresh water are not always close to where people live
water stored in soil and rock beneat Earth's surface.
occur when people use water in an area faster than the water cycle can replace it.
Substances that cause pollution
Most water pollution is caused by:
human activities. Wastes produced by households, agriculture, industry, mining, and other activities
the water and human wastes that are washed down sinks, toilets, and showers
Animal wastes, fertilizers, and pesticides are sources of pollution
chemicals that kill crop-destroying organisms.
Industry and Mining Wastes
plants, mills, factories and mines produce wates that can pollute
Water that causes erosion pikcs up sediments. Sediments can cover up the food sources, nests and eggs of organisms in bodies of water
heated water can kill organisms living in the body of water into it was released.
Oil and Gasoline
most dramatic forms of water pollution is an oil spill
another pollution problem is caused by oil and gasoline that leak out of damaged underground storage tanks
How to keep water Clean
1. Sewage Treatment 2 Reducing Pollutants 3. Cleaning up Oil and Gasoline Spills