LINKS

~LINKS~

http://ciapacov.gob.mx/Cultura/Contaminacion.php

http://es.wikipedia.org/wiki/Contaminaci%C3%B3n_h%C3%ADdrica

http://mx.answers.yahoo.com/question/index?qid=20071211200949AAryLcM

https://www.google.com.mx/search?um=1&hl=es-419&biw=1024&bih=485&tbm=isch&q=SOLUCIONES+ALA+CONTAMINACION+DEL+AGUA&spell=1&sa=X&ei=lO2CUfnnLba34AOmwIGYDA&ved=0CE0QBSgA#imgrc=DS2hgCCdSnfHRM%3A%3B3MWlhxaNOTRX-M%3Bhttp%253A%252F%252Fecoplanetaverde.com%252Fwp-content%252Fuploads%252F2012%252F04%252F00961_01.jpg%3Bhttp%253A%252F%252Fecoplanetaverde.com%252F%253Fp%253D162%3B413%3B413