Rivers of the Iberian Peninsula

Spanish rivers can be divided into three groups, according to the ocean or sea that they flow into

Questions:

a) How many river basins can we distinguish depending on the ocean or river they flow into?

b) Name some characteristics of each one and give the names of (at least) three tributaries.

Now, another...

Relief of the Iberian Peninsula

Now, shall we study the main elements of the Iberian Peninsula through its geological origin.
Go to this video link to understand it.

http://www.youtube.com/watch?v=DpQJ8Rkx4W4