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1. MINERALS.
2. ROCKS. A rock is a mass of hard consolidated mineral matter.
The structure of our planet:
  • The outer layer (brown) is called crust. It's solid and made up of rocks similar to those we see on the Earth surface.
  • The orange layer is called mantle. It's solid and made up of dense rocks.
  • The red layer is the external core. It's liquid.
  • The grey one is the internal core. It's solid again and very rich in iron.
3. USEFUL ROCKS AND MINERALS.
PARA REPASAR.
Author: Pablo Acosta Robles
LANDSCAPES.

A landscape is a set that includes many elements. We can group them in: a) relief, b) vegetation, c) courses and masses of water, d) artificial elements.

Natural landscape
 Rural landscape
 Urban landscape  







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