A piece of bread was placed in a dark, damp cupboard. Another piece of bread was toasted until dry and placed on a sunny windowsill. Why did mould grow only on the bread in the cupboard?
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Worked Solution
Step 1: Compare the two conditions. One is damp and dark; the other is dry and sunny.
Step 2: Fungi (mould) require moisture, food, and air to grow.
Step 3: The lack of moisture on the toasted bread prevented growth.
Correct answer: Fungi need moisture to grow.
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