Mystery #4Tier 3plants / biology
Where does a giant tree's wood actually come from?
A tiny seed grows into a tree weighing many tonnes. It's tempting to think all that wood came up out of the soil, but dig around a huge tree and the soil has barely gone down. So where do tonnes of wood come from?
Your guess
What's your hunch about where all the mass of a huge tree's wood comes from, if not mostly from the soil?
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.