Why aren t so many species on Earth capable of amphibious land, sea and air?

If you compare the earth to a cauldron, it's a hodgepodge. Because there are so many species on the earth, by the beginning of the 21st century, there are millions of species on the earth according to incomplete statistics, in order to better distinguish the species of organisms, and in order to have a better understanding of them, human beings have classified animals.

These include vertebrates and invertebrates, and among vertebrates, there is a detailed classification, reptiles, amphibians, mammals, and so on. One of the most special species is amphibians, which can live both in water and on land. Most organisms can only be in the water or on land, choose one of the two, but amphibians can do, why haven't amphibians evolved on Earth?

Can you survive in three environments: land, water and air?

First of all, what exactly is an amphibian? Amphibians refer to living in the water when they are young, and can survive on land after adulthood, and amphibians do not mean that they can survive on land, sea and air, among amphibians and terrestrial vertebrates, amphibians are very low, it can be said that it is a process of evolution from marine organisms to terrestrial organisms, and it is a transitional stage of evolution, retaining the most primitive mode of production, and higher organisms than it have long been on land and become higher vertebrates on land. Therefore, amphibians are very low-level beings, and if there is a creature that wants to evolve into an amphibian, the conditions that need to be met are very harsh.

The amphibian becomes a habitat in the sea, land and sky, which means that its life form will be more advanced, first of all, the first must have wings, if a creature is born in the ocean, how can it grow wings? Among the creatures of the earth, there are only viviparous or born creatures, and it is possible that they will meet the conditions for the appearance of wings. They cannot stay in the water for long periods of time unless they evolve to have two ways of breathing, or to hold their breath for a while like a whale before resurfacing to breathe.

The second is that if amphibians really exist, then their life forms may be higher than humans, there will be no natural predators on the earth, they will be threatened in the ocean, they can live on land, they can be threatened on land, they can soar in the sky, and such amphibians will have more advantages than ordinary creatures.

According to the current direction of the evolution of life on Earth, the possibility of the emergence of amphibians is very small. Although the evolution of different organisms is not necessarily perfect, they all have their own unique advantages, which can allow them to establish themselves on the earth.

Sea, land and air amphibious means perfection, but it is impossible to evolve into a perfect species. The tissues and organs of sea, land and air amphibians are too complex, and the survival rate will not be high.

In the process of learning about the earth, scientists have discovered many anomalous phenomena, and high technology has kept pace with the times. Carry out the process of building pyramids. It is believed that before humanity established the current social system, the earth had a more developed prehistoric civilization.

Due to the long history, it is not easy to find traces of prehistoric civilizations. However, according to some historical data, the reason why the ancients were able to develop high technology may have something to do with extraterrestrial civilizations. Stepped on the land.

Such an opinion is not unfounded. For example, in ancient paintings from countries around the world, evidence of the existence of extraterrestrial civilizations has been found.

Because there are so many species on the planet, if such species exist, we may not be able to find them.

There is a kind of animal that I know and have seen is a waterway and empty animal, it is a wild duck, it can swim in the water, it can walk on land, and it can fly in the sky, which is really a wonderful thing.

Amphibians have particularly high requirements for animal lungs, but water and high altitude are relatively extreme cases, and it is difficult for the lungs to have such a large span, so it is almost impossible to become a tribious.

Because it takes very extreme conditions for species to evolve into amphibians, if the ecological environment is extremely bad in the future, it may appear, but it is better not to appear, and it means that it is about to be unsuitable for human habitation.

Animals generally fly in the sky, swim in the water, run on the ground, under normal circumstances, amphibians can survive well, if the future living environment changes, there may also be amphibians, evolution is generally for better survival.

Natural selection tells us that animals are constantly adapting to their environment in order to survive. If the environment allows it to survive, it will not evolve into an amphibian.

There are no amphibians in nature because amphibians are enough to adapt to the natural environment and social development. It is possible that the amphibian will evolve in the future, because there are more than enough possibilities in the future.

There are no amphibians.

Only amphibians.

Amphibians are also a well-known type of animals, which are the transitional type from aquatic to terrestrial in the evolutionary history of vertebrates.

There are more than 4,000 species of amphibians in the world. According to their morphology, they are divided into three major orders.

1 Worm Newt (Apopoda). That is, the Banna newt.

2 have tails. Such as giant salamander, commonly known as "baby fish".

3 tailless. Such as frogs and toads.

Amphibians refer to the respiratory system, which can breathe on land and absorb oxygen from the air as well as oxygen dissolved in water.

It doesn't mean being able to live in both environments. If you distinguish by the living environment, it is not a kind of two things that can be distinguished.

Because are there any amphibians in the world? The problem is not valid.

So there are no amphibians in the world.

Dragonflies can be counted!

The larvae live in the water, and when they become insects (i.e., dragonflies), they fly in the air to prey on insects, and when they are tired, they will stop in trees or on land to recuperate! Hehe!

There is no zoological classification of amphibians.

Yes, there are people, because nowadays people can adapt to various environments.