Mystery #1Tier 2microbes / fungi
Why does bread go mouldy?
Leave a slice of bread out for a week and fuzzy green-grey patches appear, yet you never sprinkled anything on it, and it was perfectly fine when you bought it. Where does the mould come from, and why does it spread?
Your guess
What's your hunch about where the mould on old bread comes from?
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.
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