Mystery #3Tier 2plants / biology
Why do leaves turn red and gold in autumn?
All summer the trees are solidly green, then in autumn they blaze into yellow, orange and red almost overnight. Where were those fiery colours hiding all year, and why do they appear now?
Your guess
What's your hunch: where do autumn's reds and golds come from, after a whole summer of green?
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.