Mystery #1Tier 2cells / growth
How do you grow bigger?
Every year you get taller, your hands get bigger, your feet outgrow your shoes. Your body is somehow adding more of itself. Where does all that extra 'you' come from?
Your guess
What's your hunch about how your body gets bigger as you grow?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.