Biology/Geology test

Today I didn’t have much time to write because I was studying Biology and Geology. I will have an intermediate test and I'm really afraid because it's the lowest grade that I have although I like Biology very much, so I can't get bad grades because I need to increase the Biology grade.

 As I have just said, I was studying and I found some good sites with summaries that I will write here:

• http://www.resumos.net/files/biogeoano1e2.pdf
• http://www.resumos.net/biologia.html#geologia
• http://www.resumos.net/biologia.html#biologia
• http://www.jcmorais.com/biogeo10.html
• http://resumosestudante.weebly.com/biologia-e-geologia---10ordm-ano.html

I found some sites with exercises too:

• http://netxplica.com/
• http://www.eslc.pt/sites/cre_site/Sala_de_Estudo/apoio_as_disciplinas.htm
• http://www.antoniosergio.pt/biblioteca/sala_de_estudo.htm