4.6 Billion Year Symphony of Evolution

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Leviathan flies above this river formed by heavy rain, and the desert is so dry, this heavy rain should be rare, but where will this water flow?

Lin felt it necessary to investigate.

The heavy rain in the sky continued, but it was strange that it seemed to rain only above the desert, while in the jungle, neither of Lin ’s bases felt any rain.

Is the twisted tree trunk blocking the water?It's unlikely, the only possibility is that the clouds only appear above the desert.

Leviathan flies in the rain with the river. The speed of the water keeps accelerating with the increase of the rain, and eventually becomes an unstoppable flood. It crashes the sand dunes, washed away the boulders, and rammed the desert in an unstoppable manner Going southwest.

The heavy rain continued for two days and nights. After the rain stopped, Leviathan still followed the river and flew southwest. Lynn suspected that it had reached the center of the desert. Even if it flew more than a thousand meters high, it could not be seen. It's time to distort the shadow of the jungle.

However, Lin saw something stranger in front of the river.

On the sandy ground in the distance, a huge cave appeared, but just by visual inspection, Lynn can calculate that the diameter of the cave mouth is more than one kilometer wide. The cave ** has a spiral ladder structure, layer by layer. Each layer is narrower than the previous layer. The entire cave is several hundred meters deep. At the deepest layer, it is only about tens of meters wide, and the bottom layer is covered with a layer like Something like white sand.

This is really amazing. How did it come about?Even if you look at it from a height of thousands of kilometers, the cave looks very huge, just like a huge wound in the desert. Maybe it should not be called a cave, but a giant cave.

The giant pit is composed of rocks, and the stones inside seem to be cracked by the light of the day, there is no water in it, it seems that there is no rain at this location, and the rushing river rushes into the giant pit, spiraling along the pit The structure rushed straight to the bottom of the pit. The cracked rock pit was immediately irrigated by the water flow. Lin seemed to hear the crackling sound of the stones after being touched by the water.

This seems to be called 'heat expansion and contraction', right?

But even such a huge torrent can only fill about 30% of the giant pit, and a huge turbid lake filled with sand and mud appeared in the giant pit.

This is really fun, there is no reason not to look at it.

Lin asked Leviathan to slowly lower the height. When approaching the giant pit, Linton suddenly felt that the surrounding airflow seemed strange. There seemed to be an airstream trying to drag Leviathan into the pit, but this airflow was not very strong. Lin adjusted her flying posture almost instantaneously and continued to fly into the pit.

On the way to the giant pit, Lin found that there were many holes with a diameter of about one to two meters on the spiral steps around. It felt strange. Did any creatures live in it?

Leviathan flew to the lake in the pit. Because the water was too muddy to see clearly, Lynn released a fish-shaped explorer and threw it into the water. It mainly wanted to see how the bottom of the pit was.

Facing the muddy water filled with sand, the visibility is only about ten centimeters even under the illumination of the lantern. The explorer uses the sense of smell and hearing tentacles to measure the object. After reaching the bottom of the water, that is, the bottom of the pit, Lin began to carefully observe the bottom of the pit The composition of the rock, the layer of white sand you saw before it was submerged, disappeared, was it mixed with water?

Such a huge pit appears in the desert, and it is too suspicious not to be buried by sand and dust. Lynn thinks that there is a great possibility that some creatures live here and will also clean up the sand and dust in the entire pit.

But ... is it possible that this pit was dug out by creatures?This feeling is unlikely. Let us not mention the difficulty of digging such a huge pit in the desert, and what is the point of digging here?Are you waiting for and collecting hard rain?The twisted jungle is in the northeast. Even if you walk on the ground, you must have arrived in ten days and nights. There is no need to dig in this pit. Even if it is hundreds of creatures as big as the foggy worm, it will take several years to dig To dig such a big place.

The more research, Lin feels more strange, it believes that it is necessary to set up a base here to observe changes here.

Just as Leviathan was preparing the seeds for the base, the explorer in the water suddenly felt a wonderful vibration, as if there were suddenly many small creatures swimming.

this is……

A small, worm-like creature, about a few millimeters in size, twisted his body in front of the explorer's eyes and slowly swam past.

worm?Was it the creature that originally stayed at the bottom of the pit?

Then, many worms appeared in the explorer's field of vision. They seemed to pop up suddenly, and more and more, even with only such a small visibility, but the explorer's field of vision is now full of countless small Worms, Lynn feels that their number seems to exceed the sand in the water.

Where did these things come out?Originally at the bottom of the pit?Or was it washed here by the river in the desert?Well ... the first possibility is obviously very big.

Lin asked the explorer to swim around the bottom of the water. It found that there were many small round spheres on the ground. The explorer stretched out his tentacles to grab a sphere. I saw that the sphere slowly cracked a slit, and then one Only a small worm drilled through the crack.

These are their eggs. The explorer found countless such eggs on the rocks under the water. Could it be that a large worm came here to lay eggs?Then let the eggs and other treatments melt away?

This is really fun, so the pit was made by a worm?But it's too hasty to say so. I don't know how big these worms can grow. It looks like they are full of meat, without the tender appearance of the carapace. It should not be the cubs of monsters like the mist worm.

Besides, why do you have to live in a pit, not in the jungle?There is no food here, just rain.

While Lin was thinking, Leviathan suddenly felt a lot of noise coming from the air. Lin raised her eyes and saw countless figures flying around the giant pit.

Those are ... giant veined dragonflies?What are they doing here?

There may be hundreds of dragonflies, and they flew into the pits. They were afraid of the huge Leviathan, but they all flew down. Most of them stopped on the surrounding stairs, while some were The water is flying around.

Lin thought they came here to catch the worms, but after watching them for a long time, no dragonfly tried to catch the worms, but made some strange movements.

Some dragonflies began to lie on another dragonfly, and then the one lying on top bent forward the slender tail and inserted it on the head of the lower dragonfly, while the lower dragonfly also bent its tail and inserted it above In front of the dragonfly's chest.

It turned out that it was reproductive activity.

Most organisms in the water will like to spray the cells directly into the water to reproduce, and the organisms on land cannot do this, so they are more direct, injecting the germ cells directly into each other's body.

Lin observed a pair of dragonflies. After a while, they separated. The one on the top kept going to find other ones that hadn't been done, while the one on the bottom bent its tail. Click on the water. click.

It seems that the upper one is a male, the lower one is a female, and the females lay eggs on the surface of the water. There is almost no difference between the male and female body types of the giant veined dragonfly. On the way of observing the creature, Lin found that the males are mostly responsible for collecting the This kind of evolutionary information, generally they will fight each other, and strive to become the strongest one to find females. Females generally do not fight, but are responsible for directly producing offspring, so the body shape will vary over time.

Although males prefer to fight, they are usually stronger, but it is not necessarily the case that males are bigger than females. For example, sharks are females larger than males, which may be related to the dangers they encounter during production. Run away, and females have to face the more terrible creatures that come to hunt for cubs, such as Deng fish or something.

This method of reproduction is quite fun. It can ensure that the offspring are the strongest offspring, but there are some problems, such as making the species become disunity, and will fight with each other in the same kind. Lynn believes that evolution is based on unity Yes, after all, only the most united single cell can become a multicellular organism.

Giant veined dragonflies don't seem to have these problems, so both males and females look exactly the same.

Leviathan released more explorers. They found eggs laid by female dragonflies on the water surface. These eggs, like worm eggs, melted in water. A small arthropod that looked like a dragonfly emerged from it. , And began to hunt small worms nearby.

This is really a clever way of breeding, but this big pit can't be made by dragonflies, they should just stumbled upon the worms here, and then came to lay eggs.

So, what is going on in this pit?

Lin is more and more interested in this place.

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Thank you ~ 688 of Soul Seeker ~!

Thanks to ~ godmorgan ~ for the reward ~

PS: Jupiter reference picture: [[[CP | W: 210 | H: 140 | A: C | U: http: file1.qidian.comchapters20137112718601635091726558205000192829.jpg]]]

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