CATDOLL : CATDOLL: Where do earthworms come from?

1. Where do earthworms come from?

Turned out of the soil

2. Why are there earthworms in the world?

Relationship with humans

Earthworms feed on plant and animal debris in the soil. They often dig holes underground to loosen the soil, allowing water and fertilizer to easily enter and improve soil fertility, which is beneficial to plant growth. Earthworms can be used as poultry feed and are the "meat" food that chickens and ducks like. Earthworms are also widely adaptable in freshwater fishing and are suitable bait for various waters, fish and climates. But earthworms also have a harmful side. There is a parasite that parasitizes pigs - the swine lungworm. During the growth and development of its larvae, it parasitizes in the earthworm for a period of time. Therefore, in areas where swine lungworms are prevalent, earthworms provide convenient conditions for the reproduction of this parasite. Live earthworms can easily spread diseases. They can spread tapeworm disease and asthma to pigs. They can spread tracheosyngamy, ringworm disease, heteronematode disease and wedge-shaped tapeworm disease to poultry.

Earthworms and flower cultivation

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If there are earthworms in the flowerpot, they must be killed. When the flowerpot is placed outdoors, earthworms can easily drill into the pot through the bottom hole. Earthworms are beneficial in the field, but they are harmful in the flowerpot. There is little soil in the flowerpot, which will cause earthworms to gnaw the roots of flowers. In addition, earthworms will dig holes. When watering, the water will flow through the holes and the flowers will not be able to drink water. If there are earthworms in the flowerpot, you can go to the flower shop to buy some "DDT" (pesticide) powder, sprinkle it on the surface of the potting soil, mix it with the soil, and water it. DDT can completely kill earthworms. Use according to the instructions on the package. Some people also believe that earthworm feces is a kind of fertilizer for flowers and is beneficial to flowers.

This is the crystallization of nature. Everything has its reason for existence.

It cannot be considered destructive

3. What animal did the earthworm evolve from?

Earthworms belong to the phylum Annelida. From the evolutionary tree, they should have evolved from the phylum Nematoda. For example: Ascaris

4. Why do we have earthworms?

Where there is land, there are earthworms

5. How do earthworms loosen the soil?

Earthworms live in moist soil 10 to 30 centimeters underground. When the surface of the earthworm's body lacks water, it will die. It keeps drilling in the soil, swallowing the soil as it drills. Because there are many rotten animal and plant corpses in the soil, the earthworm swallows the soil into its body, digests the organic matter in it, and then excretes it into the soil. The small particles of soil that we usually see on the ground are the excrement of earthworms.

This is how earthworms loosen the soil

6. Who are the ancestors of earthworms?

The newspaper a few days ago published _ Sea Scorpion