billys earth and rocks revision

earth and rocks

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  • earth and rocks
    • the 3 main rock types
      • igneus
      • sedimentary
      • metamorphic
      • weathering
        • physical weathering
        • chemical weathering
        • biological weathering
    • enviroment
      • life on earth
        • extinction is increasingly worrying subject and is becoming more and more common due to pollution and human activities
      • changes in the environment are happening all the time due to global warming
        • these changes include:
          • getting colder and darker at night
          • winters colder, summers warmer

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