¿Por qué es tan importante la biodiversidad? - Kim Preshoff

Tests to Identify Minerals

Rocks

http://nationalgeographic.org/encyclopedia/non-renewable-energy/

http://greengarageblog.org/list-of-top-9-pros-and-cons-of-fracking

  

https://www.khanacademy.org/partner-content/mit-k12/mit-k12-ea/v/rock-cycle

Minerals in Your House

http://www.oum.ox.ac.uk/thezone/minerals/usage/build.htm

http://www.oum.ox.ac.uk/thezone/minerals/define/quiz/index.htm#question5

http://www.mineralogy4kids.org/minerals-your-house

 

http://alandalusalnatural.blogspot.com.es/2015/04/web-tasks-minerals-and-rocks.html