Question

4 During the rainy season you must have seen earthworms coming out of the soil. Can you say why this happens?

Answer 1

Worms, insects, and other small living things use the air trapped in the small spaces between the particles in the soil.

• Earthworms live in the soil and acquire their oxygen needs from the air trapped between the soil particles.
• Rainwater fills all the spaces in the soil during the rainy season.
• As a result, earthworms emerge from the soil in search of oxygen.