Water Pollution

Rainfall, snowmelt and irrigation cleanse the surface of the Earth. Any pollutants that are on the ground will eventually come in contact with water. So what? The water is just cleaning the streets and everything it comes in contact with, right? Wrong, the water picks up everything that is in it's path.

This can range from pieces of food to motor oil to fertilizer or any pollutants that might lie on the millions of roads and expressways of the US. Now the polluted water makes its down fall into the ground water, which intern ends up in nearby streams, rivers, and lakes. This means that any pollutant left on the ground will eventually end up as contamination of the water supply. We need this water to drink and we use the rivers and lakes as recreation. Water runoff presents a major problem.Polluted water runoff is hard to calculate, but some attribute as high as 80% to runoff.

Most people think that only the big companies are to blame for the poor quality of water, but that isn't so. The large companies are regulated by the Clean Water Act. There is no way to control the amount of pollution that is taken by water runoff. Police can not find everyone that has spread their old motor oil on their driveway to keep the dust down or keep track of how often people fertilize their lawn. This is much more difficult to detect and prevent. This comes down to each persons own values and environmental values. Each individual is responsable for their actions and there is no way to police that. The average person doesn't cause any large quantities of water pollution, it comes from an unlikely source.

Water Pollution

The major sources of water pollution are organic pollution, agricultural pollution, runoff, toxic waste, and thermal pollution. Organic pollution is becoming more and more pressing on the environment, because of the growing population of the world. It's a simple concept, the more people there are in one area, the more waste they will produce.

For example, in a city there are so many people that the sewage plants and the environment can't take care of all of the waste and function in its usual manner. The sewage plants do their best, but the secondary discharge that gets into the water supply causes great problems. The excess waste acts as a fertilizer or food source for algae and the growth rate is uncontrollable. Everyone has been in a lake where there is a lot of dead algae on the shore and the water is clouded with algae.

This situation is known as eutrophication, where algae growth is out of control and the water becomes oxygen depleted. There are natural cycles of eutrophication in the spring and fall, but the body of water can deal with those amounts. When excess waste is added to the water the body of water can no longer control the growth of the algae and the water soon becomes algae ridden and oxygen depleted. The water becomes oxygen depleted, because the dead algae goes to the bottom and uses the oxygen in the deeper water to decompose, but if there is too much dead algae all the oxygen is depleted.

Oxygen from the surface doesn't reach the bottom, because the warmer water is less dense than the deeper cooler water, therefor the warmer water floats on the colder water and they never mix, much like oil and water. Soon the dead algae piles upon itself and makes the lake shallower, until it totally fills in and dries up.

Water pollution

Water pollution is increasingly becoming a large problem that we as humans need to confront. Water is our most valuable resource. Just think of how much we humans are dependent upon clean water.

Water is way more valuable than gold, what can you go a day, week, year with out, gold or water? Besides the fact that we drink the water, we use it for irrigation of farm fields, cooking, washing clothes, flushing toilets, etc. ..

Every industrial process requires water to function. Everyone knows that the Earth's surface is covered by 70% water, so why fuss of protecting water? Only 3% of all water is fresh and drinkable and of that 3%, 75% is frozen, which leaves a grand total of only 1% of the Earth's surface water that is readily available for consumption. After taking that fact into account, one can see why the conservation and protection of our remaining water supply is so vital. Before water pollution can be stopped, the sources of the pollution must be known.

AIR POLLUTION

Pollution is the introduction of harmful substances or products into the environment. It is a major problem in America and as well as the world. Pollution not only damages the environment, but damages us also.AIR POLLUTION

It has cause many problems ranging from lung cancer to the greenhouse effect. It is all among us but we continue to live in our own filth. What is the reason behind this flawed logic.... In this paper I will examine the problems and solutions for this issue.Automobiles are undeniable the greatest source of pollution. The noise pollution created by cars is immense. Another polluting effect of cars is the heat it creates.

This heat makes it unpleasant to be near the car while its running. And of course the most famous of the automobiles evils is the exhaust. The toxic fumes given off as a byproduct of the combustion engine are slowly deteriorating our lungs and our atmosphere. The exhaust is extremely toxic to human beings

Air pollution is severe

Pollution has become a major issue over the years. It has caused death, disease, and many health problems. It is a major concern of our world today and not much is being done to prevent it. If not all, a lot of pollution is caused by humans. There are different types like industrial, agricultural, etc.....

Many people are realizing now the threat that pollution poses to humans. There are three main types of pollution. They are land, air, and water pollution. Land pollution deals with dumps or other harmful substances. Strip mining, digging, and irrigation are types of land pollution also. They aren’t as harmful to us but they scar and hurt the land. Landfills are a major source of pollution. Most are infested with disease or with animals carrying disease. Many contain harmful chemicals that seep into the land or gasses that cause explosions or fires.

Solid and hazardous wastes are found in landfills and dumps. Solid wastes are the most visible form of land pollution. Every year, humans dispose of billions of tons of solid wastes. Most of our disposal methods cause harm to the environment. Hazardous wastes are substances released into the environment that can cause death or harm to people and their surroundings. These wastes are very hard to dispose of and usually contaminate the environment quickly.

Air Pollution

Air pollution concentrations have been rapidly increasing in the major urban areas of Brazil caused mainly by the increasing use of vehicles. Policies to control car emissions in Brazil have relied basically on mandatory emission standards and subsidies for specific cleaner technology resulting in substantial decrease of car emission rates. Nevertheless, taxes on car sales, differentiated by vehicles' size and fuel, have also influenced car emission patterns.This paper analysis the compliance trend of the Brazilian fleet with environmental standards between 1992 and 1997. We find that larger automobiles had the fastest compliance schedule while popular models adjusted very slowly. Also gasoline-fueled models had a faster adjustment pattern than ethanol cars. Additionally, we analysis the current relationship between pollution emissions and car characteristics in order to orient policy formulation.

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