• Changes in materials
    Irreversible changes, like burning, cannot be undone. Reversible changes, like melting and dissolving, can be changed back again. Introdu...
  • Animal Adaptations
    Animal Adaptations This planet is full of different animals. They can be easily found anywhere. They are easily adapted to conditions o...
  • (no title)
    Animal structures powerpoint from Tania Gabriela Verniers