Standard Science Primary 3 Diversity

Ravi put some fish in a tank. He noticed they often come to the surface of the water. Which need are the fish trying to satisfy?

A Need for light
B Need for air
C Need for food
D Need for shelter
Show Worked Solution

Worked Solution

Step 1: Water contains dissolved air/oxygen. Step 2: If oxygen levels are low, fish may gulp air at the surface. Step 3: This shows living things need air to survive.

Correct answer: Need for air

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