Every group have 2 people. The work have these points:
- Main rivers in our region (Castilla and leon), with a river map.
- Especially the features os the rivers Tera, Esla and Orbigo, features as sources, basins, flows, reservoirs ...
- Especially the differences from winter to summer in their flows.
- How is the way that we take the water supply for Benavente?
- How is the landscape next to the rivers? Type of vegetation.
- Explain why water pollution is such a serius problem in the world.
- Examine two o three especific problems in our rivers: Esla, Tera and Orbigo.
- Argue what we can all do about it.