CATDOLL : CATDOLL: What does a moist environment for earthworms indicate?

1. Are there always tiny earthworms crawling out of the toilet?

It's because the bathroom is too humid, and it's a bathroom. Earthworms like dark and humid environments. The reason is that earthworms breathe through their skin and require a humid environment. Once they are in a dry environment for a long time, they will suffocate. You can buy some "trichlorfon" (pesticide) powder, which can completely kill earthworms. Just follow the instructions on the package for use.

2. The body walls of earthworms can secrete mucus, so why do they live in humid places?

Earthworms are annelids and do not have a thick cuticle or scales covering their body surface, so they have almost no water retention capacity.

3. Why do earthworms survive in moist soil?

The lower the animal kingdom, the simpler its body structure. Take respiratory organs for example. They only began to appear in vertebrates, such as gills in fish, and then lungs gradually appeared in amphibians, reptiles, birds and mammals.

Therefore, for earthworms, they breathe mainly through their skin. Since they live in the soil, the soil must be moist to absorb air, so that earthworms can breathe through the contact between their skin and moist soil.

Because moist soil contains water, the oxygen in the air will dissolve in the water, so the surface of the earthworms we see is always sticky and wet. Once the earthworms leave the moist soil, they will die because they cannot breathe.

4. Why do earthworms live in moist soil?

1. Earthworms live in wet soil to keep their body surface moist and to facilitate breathing.

Because it has no special respiratory organs, it mainly exchanges oxygen and carbon dioxide through its moist epidermis. Earthworms need good ventilation to replenish oxygen and discharge carbon dioxide. They are particularly sensitive to ammonia, smoke, etc.

2. Earthworms live in wet soil to avoid friction during movement.

Earthworms are annelids and have no feet. Their movement depends almost entirely on the contraction of the segments of their bodies and the static friction between the bristles on the segments and the soil in order to overcome the damage caused by rough sand particles to their delicate skin.

3. Earthworms live in wet soil to keep their body surface moist.

The earthworm's body is covered with sticky liquid, but once exposed to the sun, its body becomes dry, its body wall easily breaks, and it eventually dies.

4. Moist soil, especially fertile gardens, vegetable gardens, cultivated land, sewers, and garbage dumps, provides abundant food for earthworms. Dry soil will deplete the body fluids of earthworms, making them inedible.