Secrets of the human body
QUESTION 1: WHAT IS THE HARDEST PART OF THE HUMAN BODY? QUESTION 2: HOW MANY BONES ARE IN THE ADULT HUMAN BODY? QUESTION 3: WHICH ORGAN USES THE MOST ENERGY? QUESTION 4: WHAT CARRIES OXYGEN IN YOUR BLOOD? QUESTION 5: WHAT IS THE LARGEST ORGAN IN YOUR BODY? QUESTION 6: WHICH SENSE REACTS THE FASTEST?
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