Sunday, 25 November 2012

Task 5

    
   

 








Nonpoint sources are sources that cannot be traced to a single site of discharge.
Examples of point sources are: factories, sewage treatment plants, underground mines, oil wells, oil tankers and agriculture.
Examples of nonpoint sources are: acid deposition from the air, traffic, pollutants that are spread through rivers and pollutants that enter the water through groundwater.
Nonpoint pollution is hard to control because the perpetrators cannot be traced.

Read more: http://www.lenntech.com/water-pollution-faq.htm#ixzz2DPoo5jcx
Nonpoint sources are sources that cannot be traced to a single site of discharge.
Examples of point sources are: factories, sewage treatment plants, underground mines, oil wells, oil tankers and agriculture.
Examples of nonpoint sources are: acid deposition from the air, traffic, pollutants that are spread through rivers and pollutants that enter the water through groundwater.
Nonpoint pollution is hard to control because the perpetrators cannot be traced.

Read more: http://www.lenntech.com/water-pollution-faq.htm#ixzz2DPoo5jcx
2 TYPES OF PARAGRAPH (TOPIC, SUPPORTING AND CONCLUDING SENTENCES) 

PARAGRAPH 1.
    Charity for the poor works to the interest of society. Charity helps poor people eat better, have a shelter and medicine so that they live better lives. Without charity the poor may not find basic resources to get by in life. As a consequence of being left alone with their misfortune--hungry, ill and homeless--poor people may contract diseases, die early, and engage in crimes. Most likely, they become bad role models for their children, too. These end-results harm a society.

Topic sentence.
Charity for the poor works to the interest of society.

Supporting sentence.
Charity helps poor people eat better, have a shelter and medicine so that they live better lives. Without charity the poor may not find basic resources to get by in life. As a consequence of being left alone with their misfortune--hungry, ill and homeless--poor people may contract diseases, die early, and engage in crimes. Most likely, they become bad role models for their children, too.

Concluding sentence.
These end-results harm a society.

PARAGRAPH 2.
    My brother has some disgusting and inconsiderate habits. He loves to chew on toothpicks. That would not be so bad if he didn’t leave them lying all over the house. Sometimes they even get stuck in the carpet. Another bad habit he has is walking through the house with his muddy boots. He will walk right across a freshly washed floor. He will take his boots off and leave them in the middle of the floor for everyone to trip over. He leaves hair all over the shower and the soap. He doesn’t bother to rinse the shower out or to rinse the soap off. This is inconsiderate because everyone else has to use the shower too. If my brother lived alone, he could be the slob that he is without anyone else caring, but since he lives with other people, it would help if he showed a little more consideration for his family!

Topic sentence.
My brother has some disgusting and inconsiderate habits. He loves to chew on toothpicks

Supporting sentence.
That would not be so bad if he didn’t leave them lying all over the house. Sometimes they even get stuck in the carpet. Another bad habit he has is walking through the house with his muddy boots. He will walk right across a freshly washed floor. He will take his boots off and leave them in the middle of the floor for everyone to trip over. He leaves hair all over the shower and the soap. He doesn’t bother to rinse the shower out or to rinse the soap off. This is inconsiderate because everyone else has to use the shower too.

Concluding sentence.
If my brother lived alone, he could be the slob that he is without anyone else caring, but since he lives with other people, it would help if he showed a little more consideration for his family!


     Water pollution is any chemical, physical, or biological change in the quality of water that has a harmful effects on any living thing that drinks or uses or lives in it. When humans drink polluted water it often has serious effects on their health. Water pollution is usually caused by human activities. Different human sources add to the pollution of water. There are two sorts of sources, point and nonpoint sources. Point sources discharge pollutants at specific locations through pipelines or sewers into the surface water. Nonpoint sources are sources that cannot be traced to a single site of discharge. Examples of point sources are factories, sewage treatment plants, underground mines, oil wells, oil tankers and agriculture while examples of nonpoint sources are acid deposition from the air, traffic, pollutants that are spread through rivers and pollutants that enter the water through groundwater. Nonpoint pollution is hard to control because the perpetrators cannot be traced. 

     There are several classes of water pollutants. The first are disease causing agents. These are bacteria, viruses, protozoa and parasitic worms that enter sewage systems and untreated waste. A second category of water pollutants is water soluble inorganic pollutants, such as acids, salts and toxic metals. Large quantities of these compounds will make water unfit to drink and will cause the death of aquatic life. A third class of water pollutants is oxygen demanding wastes, wastes that can be decomposed by oxygen requiring bacteria. When large populations of decomposing bacteria are converting these wastes it can deplete oxygen levels in the water. This causes other organisms in the water, such as fish, to die. Another class of water pollutants are nutrients. They are water soluble nitrates and phosphates that cause excessive growth of algae and other water plants, which deplete the water's oxygen supply. This kills fish and when found in drinking water, can kill young children. 

     Water can also be polluted by a number of organic compounds such as oil, plastics and pesticides, which are harmful to humans and all plants and animals in the water. A very dangerous category is suspended sediment, because it causes depletion in the water's light absorption and the particles spread dangerous compounds can cause cancer, birth defects and genetic damage and are thus very dangerous water pollutants.

      In conclusion, I think that water pollution is, without a doubt, a huge problem in today’s society. If we do not take action now this could lead to bad news for everyone in many ways. Our drinking water will be affected and our aquatic organism will be affected, which will eventually be a risk for humans in many ways. I think that more people should be concerned with this topic and how they greatly affect our everyday lives. People should stop taking what they have for granted and try to help stop this enormous problem before it is too late.

Topic sentence.
Water pollution is any chemical, physical, or biological change in the quality of water that has a harmful effects on any living thing that drinks or uses or lives in it.

Supporting sentence.
When humans drink polluted water it often has serious effects on their health. Water pollution is usually caused by human activities. Different human sources add to the pollution of water. There are two sorts of sources, point and nonpoint sources. Point sources discharge pollutants at specific locations through pipelines or sewers into the surface water. Nonpoint sources are sources that cannot be traced to a single site of discharge. Examples of point sources are factories, sewage treatment plants, underground mines, oil wells, oil tankers and agriculture while examples of nonpoint sources are acid deposition from the air, traffic, pollutants that are spread through rivers and pollutants that enter the water through groundwater. Nonpoint pollution is hard to control because the perpetrators cannot be traced.
There are several classes of water pollutants. The first are disease causing agents. These are bacteria, viruses, protozoa and parasitic worms that enter sewage systems and untreated waste. A second category of water pollutants is water soluble inorganic pollutants, such as acids, salts and toxic metals. Large quantities of these compounds will make water unfit to drink and will cause the death of aquatic life. A third class of water pollutants is oxygen demanding wastes, wastes that can be decomposed by oxygen requiring bacteria. When large populations of decomposing bacteria are converting these wastes it can deplete oxygen levels in the water. This causes other organisms in the water, such as fish, to die. Another class of water pollutants are nutrients. They are water soluble nitrates and phosphates that cause excessive growth of algae and other water plants, which deplete the water's oxygen supply. This kills fish and when found in drinking water, can kill young children.
Water can also be polluted by a number of organic compounds such as oil, plastics and pesticides, which are harmful to humans and all plants and animals in the water. A very dangerous category is suspended sediment, because it causes depletion in the water's light absorption and the particles spread dangerous compounds can cause cancer, birth defects and genetic damage and are thus very dangerous water pollutants.

Concluding sentence.
In conclusion, I think that water pollution is, without a doubt, a huge problem in today’s society. If we do not take action now this could lead to bad news for everyone in many ways. Our drinking water will be affected and our aquatic organism will be affected, which will eventually be a risk for humans in many ways. I think that more people should be concerned with this topic and how they greatly affect our everyday lives. People should stop taking what they have for granted and try to help stop this enormous problem before it is too late.


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