important to think‚ first about the topic and then what you want to say about the topic. Most often‚ the topic is easy‚ but the question then turns to what you want to say about the topic which is the controlling idea. Topic sentences should always contain both (1) a topic and (2) a controlling idea. Read the following topic sentences. They all contain a topic (in red) and a controlling idea (in green). When your introduction contains a clearly stated topic sentence such as one of the following‚
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Air Pollution Hamza Akouayri Class: 600 Robyn Conner Date Air Pollution Air pollution has been a big issue in the entire world. Air pollution occurs when the air includes dust‚ fumes or gases. Air pollution is the accumulation of hazardous substances into the atmosphere. These substances that cause air pollution are called pollutants. In effect air pollution is one of the biggest problems‚ which are threatening people and earth. People breathe in polluted air. Every second people
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Chemistry Essay on Air Pollution Air pollution is a serious and severe consequence towards people not using natural resources correctly and effectively. Air pollution refers to the introduction of chemicals and biological materials or any particulate matter that can cause harm towards humans and other living organisms. Air pollution in Beijing is especially severe. The air quality in Beijing is already very bad. According to the U.S. air pollution monitor‚ tests shows that the air quality index of
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trucks‚ buses‚ ships and trains account for 90% of the cancer risk associated with air pollution” (europa.eu). Air pollution is the introduction into the atmosphere of chemicals‚ particulates‚ or biological materials that cause discomfort‚ disease‚ or death to humans‚ damage other living organisms such as food crops‚ or damage the natural environment or built environment. The Earth is surrounded by a blanket of air that’s polluted with gases from the atmosphere such as the industries‚ agriculture
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Essay 1 Air Pollution: Causes and Effects It keeps us alive but at the same time‚ it can also be harmful. We breathe air everyday. Air provides us with oxygen that is essential for living. Nitrogen‚ water vapor‚ and inert gases comprise air along with oxygen. Emission of substances that contaminate air results to pollution. Causes Air pollution is both natural and human-based. Natural air pollution is caused by phenomenon such as volcanic eruption‚ wind erosion‚ decomposition and radioactive
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Short Paper - Air Pollution The U.S news reveals the fatal air pollution measurements and effects China is encountering‚ but the news in China news themselves never shown the numbers beyond index 500. As the industry rapidly grows in North China‚ the most polluted region is often the target of the discussion about air pollution issues. However‚ China’s state based news sources constantly reported on the positive side‚ especially on how they fight over the improvement of their air quality‚ while
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[pic]! [pic] ‘I’ll go out for a breath of fresh air’ is an often-heard phrase. But how many of us realize that this has become irrelevant in today’s world‚ because the quality of air in our cities is anything but fresh. The moment you step out of the house and are on the road you can actually see the air getting polluted; a cloud of smoke from the exhaust of a bus‚ car‚ or a scooter; smoke billowing from a factory chimney‚ flyash generated by thermal power plants‚ and speeding cars causing dust
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Air pollution is one of the virtual problem nowadays. There are many reasons of it but mostly it is caused by cars‚ growing cities‚ development of economy and industrialization. Clean air consist of several gases. When some other gases or dangerous elements get into the clean air‚ pollution is inevitable. Ozone layer is affected too much by pollution and it will cause serious disturbances on the environment. People are the main cause of pollution because the things that we use contain dangerous
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Air is the name given to atmosphere used in breathing and photosynthesis. Air supplies us with oxygen which is essential for our bodies. Air contains a variable amount of water vapor‚ on average around 1%‚ while air content and atmospheric pressure varies at different layers‚ air suitable for the survival of terrestrial plants and terrestrial animals is currently only known to be found in Earth’s troposphere and artificial atmospheres. Air is made up of 99% nitrogen‚ oxygen‚ water vapor‚ and inert
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Air pollution by Chris Woodford. Last updated: September 14‚ 2014. There’s nothing quite like opening the door and breathing fresh‚ clean‚ air—but how clean is the air you’re breathing right now? Unless you’re a scientist with a chemistry lab at your fingertips‚ there’s no real way of knowing. The gases you’re sucking up through your nose could be slowly killing you: according to the World Health Organization‚ around two million people die prematurely from the effects of polluted air every
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