Standard Science Primary 3 Diversity

Which of the following is a way that bacteria can be helpful to humans?

A They cause food to rot.
B They are used to make yogurt.
C They cause sore throats.
D They make our teeth decay.
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Worked Solution

Step 1: Bacteria are not always harmful. Step 2: Certain types of bacteria are used in food production. Step 3: Lactobacillus bacteria are used to ferment milk into yogurt.

Correct answer: They are used to make yogurt.

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