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Jon Richards
6-7: How your eyes see
8-9: How your ears hear
10-11: How you taste and smell
12-13: How you feel
14-15: How your body digests food
16-17: How you breathe
18-19: How to get blood around your body
20-21: How blood protects you
22-23: How your bones heal
24-25: How your muscles move
26-27: How a baby grows
28-29: How you grow bigger
