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Image showing the solution to the join the dots puzzle (a person's head with their brain inside).
  • Did you know that the human brain weighs about 1.3 kg, which can be about 2% of our total body weight?
  • Elephant brains are 6 times heavier than human brains.
  • The human brain is changing and developing well into your early 30s.
  • Our brains are surrounded by two protective cases called the pia mater and the dura mater.