• Recuperación Social Science
    Special sentences: 1. Meseta is an extensive flat terrain located more than five hundred meters over sea level.       2. The Meseta...
  • Unit 6 ECOSYSTEMS
    1. Ecosystems are made up of three elements: the biotope, the biocenosis and the relationships between them. 2. The biotope is ...
  • UNIT 4 Living organisms. Plants.
    1. There are two characteristics that all living beings have in common: they are made of cells and they do three vital functions. ...