References

Web: 

http://ambientesaudavelbiologia.wordpress.com/contaminacao-das-aguas/

http://ambientesaudavelbiologia.wordpress.com/contaminacao-das-aguas/

http://pt.wikipedia.org/wiki/Eutrofiza%C3%A7%C3%A3o

http://www.explicatorium.com/TEMAS-Eutrofizacao.php

http://portaldaagua.inag.pt/PT/InfoUtilizador/UsoEficiente/Pages/ConsumoPortugal.aspx

Biblioteca:

Terra,Universo de Vida, Biologia 12ºano, Porto Editora, Silva, Amparo Dias da; Santos, Maria Ermelinda; Mesquita, Almira Fernandes; Baldaia, Ludovina; Félix,José Mário

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