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Leaded and Unleaded Petrol |
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Written by pimpitcha
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Saturday, 31 May 2014 09:35 |
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In USA in the 1970s, 200,000 tonnes of lead was added to petrol every year. Now leaded petrol for cars is banned. Discover the dangers of tetraethyl lead in petrol. Midgley Junior added lead to fuel, making it better for our engines.
However, lead is a dangerous pollutant. It is toxic and damages our inner organs. Leaded fuel caused a health scare. Leaded fuel has been banned and replaced with unleaded.
ที่มา : www.twig-world.com
ลิงค์ : http://goo.gl/ocBaO9
อัพโหลดโดย : Twig World
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Last Updated on Saturday, 31 May 2014 09:35 |
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