I was shocked. Why are earthworms so short and small?

The growth cycle is relatively short, so the earthworm is relatively small.

Sting is the third of the 24 solar terms. On March 5th or 6th every year, when the sun reaches 345 degrees, it is a fright.

Growth cycle of earthworm: the average growth cycle is 3 months, and it takes about half a year to grow to 10 cm in a good growth environment.