Advanced Science Primary 3 Diversity

Which of the following is a USEFUL way that humans use bacteria?

A To spoil food left on the table
B To cause tooth decay
C To make yogurt
D To make iron rust
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Worked Solution

Step 1: Identify that not all bacteria are harmful. Step 2: Bacteria are used in food production processes. Step 3: Specific bacteria are used to ferment milk into yogurt.

Correct answer: To make yogurt

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