1.- Categorise the following as renewable, non-renewable or perpetual resources:
- A field of corn
- Oil in the Arctic tundra
- Sunshine
- Coal in the Cantabrian mountains
- Trees in a forest
- Tuna in the ocean
- Sand on a beach
- A breeze over the Castilian plateau
- Water in a river
2.- Which resources would continue to be available no matter how much people used them?
3.- Under what circumstances would a renewable resource not be renewable?