Subject :NSO Class : Class 6
Kanika noticed that her potted plant was not growing healthily. She put few earthworms into the pot. After a few weeks, she noticed that her plants looked healthier. What could be the possible reason for this?
A The earthworms ate up the pests in the soil.
B The earthworms helped the plant to take in water.
C The earthworms allowed the plant to make food faster.
D The earthworms increased the air and nutrient content of the soil.
both option A and D are correct as earthworms also eat the pests and increase the air and nutrient content of the soil as these are some of the main reasons why the earthworm is called the farmer's friend.