Standard Science Primary 3 Diversity

Sian put a fish in a bowl of water and covered the top tightly with plastic wrap. After a few hours, the fish was struggling at the surface. This is because __________.

A the fish is hungry
B the water is too cold
C the bowl is too small
D there is not enough air in the water
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Worked Solution

Step 1: The plastic wrap prevents new air from entering the water. Step 2: Fish need oxygen (air) dissolved in water to breathe. Step 3: As the fish uses up the oxygen, it struggles for air.

Correct answer: there is not enough air in the water

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