cfcs
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Title: cfcs

Essay Details:

Subject: Science
Author: Thomas H
Date: February 1, 2015
Level: University
Grade: B
Length: 20 / 5814

Essay text:

Los CFCs son sustancias quimicas sinteticas, formadas por cloro, fluor y carbono. Las moleculas de CFC tienen una larga vida activa. El CFC-1 1 es activo durante unos 65 anos y el CFC-12 durante unos 110 arios. Cada molecula de CFC-11 y de CFC-12 contribuye 3.500 y 7.300 veces mas, respectivamente, al efecto invernadero que cada molecula de C02. Los CFCs tambien destruyen la capa de ozono en la estratosfera, causando que una mayor proporcion de rayos ultravioleta alcance la superficie de la tierra. Una mayor incidencia de rayos ultravioleta tendria importantes efectos tanto en la agricultura como en la salud humana...

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