discuss the importance economic activities of earthwarm
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《Earthworm》
Earthworms are extremely beneficial in agriculture. They aid in the following ways: They help loosen up and aerate the soil as they burrow deep. This aids in the respiration of the roots of the plants, making them penetrate deeper and grow well.
Excretory wastes and other secretion of earthworm contains nitrate, calcium, magnesium, potassium, and phosphorous which forms the important plant food. Charles Darwin has estimated that an acre of the earth is inhabited by nearly 50,000 earthworms which may bring about 18 tons of deeper soil to the surface in 1 year.
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