What is El Nino and La Nina? How are they formed? Explanation and diagrams.

Detailed explanation of how El Nino and La Nina works. I use both an animation and also hand drawn notes to help explain the process. This video is perfect for GCSE, AS/A Level and IB DP Geographers to help them in their notes and examinations. Please visit my teaching website: http://www.thegeographeronline.net