What animals are useful to humans What are they used for

All animals are maintaining ecological balance, theoretically all of them are helpful for human survival, Dan I think what you asked must be directly beneficial, I will give the following example:

1. Insectivores: reduce the harm of insects to dealers;

2 Poultry and livestock: meat, eggs, milk, leather, feathers, and the bow hair of the erhu is also made of horsetail hair (this type of horse is used exclusively for the bow hair).

3. Ornamental type: pets for people to play with and raise: birds, rabbits, cats, dogs, turtles, fish, etc. There are also some decorations: antlers, cattle and sheep skulls, shells, etc.

4 Discovery: Many animals have inspired people's imagination: whales have invented streamliners, etc.

5 Medicine: Many animals can be cured, such as pangolins, starfish, seahorses, etc.

There are many more, and I'm just the tip of the iceberg here, to give some inspiration. I was going to type a few more sentences, but the typing speed was too slow, so much. Hope it helps.

Animals and humans are interdependent, human beings are inseparable from animals, because the meat we eat is provided by animals, without them we will be malnourished, there is a possibility of human cannibalism, after all, human beings can no longer live without meat; The same animals are also inseparable from humans, and the existence of human beings restricts the development of some strong animals and plays a certain role in protecting weak animals. Moreover, humans and animals are both links in the big food chain of society, and if they are missing, they will lose their balance.

Insectivores are useful to help farmers reduce the number of insects that eat the farmer.

It's a general question, but I think the second floor is good.

In the ecosystem, through the food chain and food web, various organisms can restrain each other, so that their numbers are relatively stable, this phenomenon is called ecological balance. If the number of animals in an ecosystem changes, the ecological balance cannot be maintained.

The roles of animals in the biosphere are:

1.If there is a change in one of the organisms in the food chain or food web, it will affect the entire ecosystem, and animals play an important role in maintaining the ecological balance.

2.In ecosystems, matter and energy move from one living thing to another along the food chain and food web. Animals can contribute to the material cycle of the ecosystem.

3.Some plants have been pollinated by animals, and the yield has increased significantly, and the animals have also obtained the pollen and nectar they need. Without insect pollination, fertilization is greatly affected, and animals help plants pollinate and disperse seeds.

Animals are an important part of the ecosystem, through the food chain and food web, interdependence, mutual constraints, maintain ecological balance, and promote the material cycle of the ecosystem, but also help plants pollinate, disperse seeds, and plants form a mutually adapting and interdependent relationship.

The roles of animals in everyday life are:

1. Animals become food for humans, providing substances for energy metabolism for the human body**.

2 Many families now have their own pets, which brings them endless pleasure and reduces loneliness for many people.

3. Leeches can be used for various human pains, and many traditional Chinese medicines are made from animal organs.

The biggest role is to control the ecology of the natural world, and then some beneficial insects can provide food or dispose of some harmful substances, and they eat pests.

The role of animals in people's lives:

Feed is provided, including the animals themselves (meat, etc.) and their appendages (milk, eggs, etc.) and sheep provide wool.

Pets, including dogs, cats, cats, etc., you can play with it, and goldfish and other ornamental ones go to the zoo to see the animals.

Countless biological chains have formed between animals, and if they were broken, humans would not have existed. Effect on plants.

The number of plants is controlled, and to a certain extent, it helps the plants to complete their own functions (such as pollination, seed sowing, etc.).