Foot Spurs More Condition_treatment

WATER POLLUTION NUCLEAR DISASTER

Water pollution is an alteration of ecosystems that as a fundamental component 's water.
It is caused by many different factors, such as direct or indirect discharges of industrial or of normal human activities (such as domestic sewage) that come into the rivers, lakes and seas from large urban centers without appropriate treatment.
Water pollution may also arise from accidental causes, such as those involving the oil .

causes
The type of alteration on water systems can be of chemical or bacterial, and the consequences can get to endanger the health of flora and fauna involved, to the men, damaging the system ecological , the water resources for food, and undermining the attractiveness of certain tourist areas or interference with other legitimate uses of water.
Water pollution is the discharge of water in reservoirs at very high temperatures, from cooling systems for factories and industries, leading to imbalance in the thermal state of the water and kill forms of life present in it.

river pollution by agricultural runoff causes eutrophication where phosphates and nitrates released feed the algae that consume oxygen and suffocate the plant and animal life.
The pollution of ocean waters is developed only by the dispersion of hydrocarbons (caused by the reversal of tanker vessels), by some nuclear-powered submarine that sank remained on the seabed, will be eroded over time by salinity, with consequent release of radioactive substances. It is also caused by oil tankers on foggy days are taken off where they are cleaned from top to bottom. All the oil remaining in the ship are thrown into the water.
(from http://www.wikipedia.org/ )