Chapter 274

Baptist and Lena left the classroom and came to the end of the corridor, where they could see out the window.

Due to the end of the rainy season, the water level in ilazmas will not be replenished. It will gradually decrease in nearly half a month, and most of the ground will be exposed. At this time, the soil soaked in water for a long time has deposited a lot of nutrients, which is very fertile, enough to support the growth of plants.

Baptist took a look at Lena.

"What can I do for you?"

"Mr. Baptist, I found a piece of information in the library of the Institute last night."

Said Lena, taking a stack of paper out of the storage bag.

This is a biological investigation on the half plane of Erasmus, but it is not a living creature, but a study based on various fossils.

That is to say, the investigation of non-existent organisms.

"What do you want to say?"

Batiste took the information and flipped through a few pages.

"This is a fossil investigation of paleontology. I saw the ancient species of the rainforest Falcon in it. This falcon is not very different from the conventional falcon, at least in terms of the structure of the fossil reaction."

There are traces of excavations, including the remains of the rainforest Falcon's nest, bones and fossils wrapped in soft soil, Leiner explained.

"This is a fossil more than 1800 years ago. There is no difference between the rainforest Falcon on the half plane of Erasmus and that of the outside world, but many differences can be clearly seen on the fossil 1200 years ago."

He turned a page, and on the second page, there were several fossils of different shapes.

"According to the investigation, the climate of Erasmus hemiplane has not always been like this. 1800 years ago, it was a region with four distinct seasons just like the main plane. Until the high water level appeared for the first time 1100 years ago, it can be inferred that the climate of Erasmus changed during this period."

According to the data, the fossils of rainforest Falcon show different shapes. They have wings larger than those of the common species, and their claws have changed, which are closer to those of Swan and duck. Because the fossils can't reflect the changes in the internal organs of feathers, it's impossible to see whether these rainforest Falcons have evolved fat secreting glands.

"There are huge differences in the morphology of these rainforest falcons. They did not evolve in the same direction completely. But in the end, only the more developed wing group of rainforest falcons survived among the fossils 800 years ago, which is not much different from the current rainforest falcons."

Batiste didn't speak. He looked at the picture.

Apart from the rainforest falcon, Lena also showed the fossils of several other animals. In the hundreds of years when the climate of the Erasmus hemiplane changed, these creatures changed from the ancient appearance to different degrees, and they all had a stage of coexistence of multiple forms, not in the same direction as Batiste said.

"Mr. Baptist, I have some conjectures. I don't know if you'd like to hear them."

Reiner collected the information and said to Battiste.

"Come on, different opinions help us think."

Batiste nodded slightly, but did not say anything to Reiner's earlier materials which were obviously used to refute him.

"I don't think the process of biological evolution is completed in one or two generations. It will last for a long time."

Said Lena first, observing Baptist's expression, and then speaking.

"The evolution of organisms does not appear without any reason. There must be a reason, but I think that if we really have to wait until the environment changes, the time for organisms to adapt is too late. Just like the Erasmus hemiplane, its climate changes from the original four seasons to today's rainy and dry seasons, and the process is only one or two years."

The fossil trees of the past can be found in the underground of Erasmus. It is easy to accurately determine the time of climate change in Erasmus. It can be seen that the climate change in this half plane is almost completed in five years. In this isolated half plane, Reiner speculates that there must be human factors in it.

"Therefore, I think that the change of biological characters is earlier than the change of environment. According to the genetic theory, the blood factor is the main factor that determines the characters, and the blood factor is not completely stable, which may mutate. The mutated blood factor is bound to cause the change of external characters. Therefore, in my guess, the first step of evolution is the mutation of blood factor."

As he spoke, Lena noticed the expression on Baptist's face. Unfortunately, there was no obvious emotional fluctuation.

"This kind of mutation is not accidental, but common and continuous. Moreover, biological evolution is not based on individuals, but on populations. In fact, the mutation occurs all the time, but some are so tiny that they can't be observed. But enough quantity will cause qualitative change, that is, quantitative change causes qualitative change."

After two steps, Lena looks out of the window at the colorful world.

"The accumulation of mutations will eventually affect the biological characteristics. It can be imagined that in a certain period of time, the rainforest Falcon presents many different forms, including the type of strong wings and flying in the higher sky, the type of webbing swimming in the water and the species of predating fish. These rainforest falcons with different tendencies live together in this hemiplane, and they can be divided into different types The same populationLena's story seems to depict such a picture, different birds flying in the sky, Erasmus half plane in harmony, but no one knows that in the near future, earth shaking changes will take place here.

"The next step is the change of the environment. The climate on the half plane of Erasmus changed suddenly. At the beginning, most of the rain forest falcons could still survive. However, as the four seasons became clear, many types of rain forest falcons began to be unable to adapt to the environment and eventually died. These different populations of rain forest falcons began to gradually reduce, and finally, there was only one species I call it natural selection, "he said

Natural selection is not only limited to the change of the environment, the invasion of alien species, and even human activities will lead to the extinction of species. Selection is like a sieve, which preserves the traits that are suitable for the environment, and screens out the ones that are not suitable for the environment.

"Of course, these surviving falcons can not be called rain forest falcons. If they want to continue to adapt to the environment of Erasmus hemiplane in the next few hundred years, they still need an important step, that is, to maintain the stability of blood factors. Unlike human beings, animals can control the breeding process independently. If they are not constrained, the remaining traits are very important It's easy to be diluted and unable to form new species. "

Lena thought of what the pure blood group did. In fact, to a certain extent, they were maintaining the purity of their blood.

"Therefore, there will be isolation between the new species and the old species, whether it's geographical isolation or reproductive isolation that can't produce offspring. Only when the half plane Falcon of Erasmus and other falcons can't produce the next generation, can this species really evolve into a new species, rainforest falcon."

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