Question -Why are earthworms called 'farmer's friend'?
Options:
A .  They improve soil quality.
B .  They make soil humid.
C .  They consume non-biodegradable waste.
D .  They act as insecticide.
Answer: Option A : A Earthworms areused for composting. This is called vermicomposting.They help in increasing the fertility of the soil and are called as 'farmer's friend'.
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