Sustainable Logging To Be Allowed In Amazon Rain Forest By Rick Hendershot Brazilian president Luiz Inacio Lula da Silva last week announced that the government would allow "sustainable" logging within 3% of the Amazon rain forest. The objective of the law is to reduce Read more...
water pollution
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Main Causes Of Water Pollution nathfiset
Today, the world is facing one of the most serious problems of humanity and other forms of life, pollution. It is a known fact that pollution is very rampant all over the globe. Just look around and you will see rivers, lakes, beaches that are murky, stinky, and lifeless. Plastic, empty cans, bottles, and other trash have replaced the fishes and other wonderful marine creatures that used to reside under water. Yet, when scarcity arises and when epidemics occur many point their fingers to others and turn their backs from the responsibility. But in fact there is no one else to blame but the people. Man is the main cause of water pollution.
People pollute the water with chemicals and other hazardous materials. People have no regard to water – their source of life. They do not realize that this once abundant resource is rapidly being contaminated due to their negligence and carelessness.
Waste disposal has always been a chronic problem, not only because of the quantity of wastes, but because of its kind and the inadequate provision for a good system and technology to address the problem. There are many sources of water pollution but it is not the source that is really causing the problem but the improper disposal of the pollutants. People resort to careless disposal because it is cheaper, more advantageous, or simply convenient to them.
When you are taking a bath using your favorite shampoo or whenever you wash your laundry using no other than the best detergent in town, it is certain that before buying those products you really never consider asking yourself whether their contents can harm the environment or not. What mattered more was the scent and softness of your hair and the clean comfort of your clothes. Instead of finding an environmental friendly product, you simply chose convenience and your satisfaction of meeting your interests. However, if you will support environmental friendly products and become more conscientious of how you can avoid contributing to water pollution, then the world has gotten rid of one polluter.
In the same way, if chemical factories are only equipped with better facilities that can release treated wastewater, there will be no harm done to the lakes or rivers where they dump their by products. If home owners associations will work to build and provide their subdivisions with sewage treatment facilities, eutrophication can be controlled and dying bodies of water will be spared. But as mentioned, polluters choose the easier way where they can save on operation costs and where they can rid themselves of the hassles of responsibility. Anyway, they are not affected by the effects of their misdeeds.
Aside from improper and careless waste disposal, another main cause of water pollution is toxic substances coming from industrial, agricultural and domestic use. Trace elements of lead, cadmium, mercury, dioxins are detected in different water sources which sometimes accumulate in the water supply causing health problems. These toxic substances come from industries such mining, power plants, automobile manufacturers and others that produce toxic substances leading to bodies of water. Apart from these industries, these toxic materials contaminate the water through accidents like chemical or oil spills.
One more main cause of water pollution is the presence of excessive nutrients in the water. Nitrogen and phosphorous compounds that generally come from sewage, fertilizers, and animal manure are good food sources of algae. Excess nutrients in water also result to excessive growth of algae that deprive aquatic plants and animals adequate levels of oxygen to survive. Because of this many aquatic organisms die and decay which aggravates the problem.
Lastly, another considerable main cause of water pollution is sedimentation. Although it is hard to imagine how soil particles can contribute to water pollution, but it does. When huge amount of solid particles accumulate in water, whether due to deforestation, farming, or soil erosion, the sediments cloud the spawning grounds of fishes leading to their gradual extinction.
Humans greatly affect the environment. People will either be heroes or villains of Mother Nature. Toxic substances, algal bloom, sedimentation are all end results of human activities. These pollutants are not the real evils of water pollution but the people behind every wrong disposal and negligence. Unless man realizes that it is not the prohibition of pollutants nor banning industrial productions that should be changed but the behavior and attitude he possesses towards his environment, the rivers, lakes, and other water systems have no hope to be saved.
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A sampling of noteworthy presentations yesterday at the annual meeting of the American Association for the Advancement of Science, taking place in Washington this weekend.]]>
All college freshmen who live in dorms should be vaccinated for meningitis, a government panel recommended yesterday, reversing policy of the past. The panel is also advising doctors to give the shot to all 11- and 12-year-old children and recommending that it be provided to at least 4 million children eligible under the federal children's vaccine program.]]>
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