4.6 Billion Year Symphony of Evolution

In spring, the warm light spreads all over the world, the ice and snow begin to melt, the sea of ​​the canyon begins to thaw, the plants begin to restore their greenness and youth, and everything, and then recover!

Then he died.

The low oxygen content continued throughout the winter. Even in the spring when the plants were awake, there was no sign of improvement. Many organisms began to wake up. Under the influence of temperature, their blood flow accelerated first, and then the cells regained vitality. The limbs also started to move.

But during this period, because of the inability to obtain enough oxygen, the vitality just obtained instantly disappeared, the creature began to produce a state of dizziness, the brain could not get enough oxygen, the limbs became weak and weak, and the creature became panic and fear, Occasionally, various phenomena such as vomiting will occur. After hundreds of seconds, the biological heart will stop beating and eventually die.

Nowadays, almost no organisms need oxygen, and even fungi and plants need it. This phenomenon has caused great damage to organisms, and it is not an exaggeration to call it a disaster.

It was the same as the oxygen disaster Lin had experienced a long, long time ago, but that time it was because of the emergence of oxygen, this time because of less oxygen.

In the jungle where all things have been restored, the screams and wailing of creatures echoed. Hypoxia is a very painful thing. Some creatures will dig out their eyes because of madness, or bump their heads, and then fall On the ground, enter death.

There is only one place where Lin calls it the 'oxygen bastion', and the creatures in it can wake up and move normally as usual.

However, most of the hypoxic creatures have not been able to get out of the sleeping nests they dug out. They just died in their own nests, and the death state is quite terrible.

Lin's snowball still floats with the wind, observing the tragedy over the jungle.

The spring sky should have been quite lively, with countless dragonflies and insect swarms flying in the air to reproduce.There are no giant veined dragonflies in the sky anymore, they all died in their own nests.

This is a new disaster ...

However, Lin has perfectly avoided the disaster this time. This incident is not really a disaster for Lin. Even if the oxygen completely disappears, Lin can survive.

But for other creatures, this was a huge destruction. Within a few days and nights, the smell of carrion began to permeate in the jungle. The fungus had begun to decompose the corpses of these creatures. Although the fungus also needed oxygen, but The needs are extremely low, and in the current situation they are almost not the same thing.

Reasons for the lack of oxygen Lin thought about many possibilities. This reduced speed is indeed very abnormal, but this is not important. Even if the oxygen is restored, these dead creatures cannot be resurrected.

But Lin always felt that the fungus was inseparable from all of this. Now, with the arrival of spring, the fungus begins to climb out of the surface to decompose a large number of dead bodies that died due to hypoxia.

After all, only the fungus is a newly emerged creature, everything else has been maintained for a long time, maybe the fungus really caused this destruction.

However, although it is destroyed, it is a new life for some creatures.

That is reptiles.

Oxygen has not completely disappeared, but it has been reduced by a certain amount, so almost all the large arthropods died because of the lack of oxygen.

In fact, more than 95% of the species that occupy the jungle are arthropods. Some of them can grow to a particularly large body, but the arthropods obtain oxygen through a stomata that spread around the body. If the oxygen content decreases, they will Oxygen cannot be obtained normally. Spring awakening requires a lot of oxygen, but they cause death.

Reptiles have an organ called the "lung", which can actively extract a large amount of air to obtain oxygen, so even if the oxygen content becomes low, they just feel uncomfortable, but they will not die, and they can adapt quickly. In the current situation, some reptiles have come out to find food.

Food now ... everywhere.

Reptiles can be said to be a kind of 'bottom' tiny creatures. They usually play the role of 'arthropod prey'. They have been running away in the panic in the jungle. They are small and can grow to the size of a crystal scale lizard. There are only a few, but this time they can use these giant monsters as food.

How will they feel?Will it feel incredible?However, it is for them to eat heads down and eat it now.

In addition, the head worm is also a kind of arthropod. They have evolved from a certain kind, but it has no problem. Its huge head requires a lot of oxygen, so it has a kind of "lung" ability. .

It does n’t have lungs in the body, but it has a small arms. Lin has only recently discovered that they are arms. At first, it was only considered to be the organ of the head worm. The miniature arms are called oxygen balls, and they are like a ball. , A lot of them are scattered in the stomata of the headworm, they will act like the lungs, and inhale a large amount of oxygen to the headworm, and they do not need to be reproduced by the "queen", they will multiply or reduce themselves according to the physical condition of the headworm, Therefore, the effect of hypoxia on headworms is very small.

There are other arms of this type in the stomata of the heads, so there is no big problem.

Sure enough, there are some methods for the division of labor species. Because of the division of labor, they can usually cope with the situations that various monomers cannot cope with.

However, Lin did not know what happened to the Inca worms. They were under the impression that they did not have this type of armament, and they did not know if there was any decrease in oxygen in the place where they went.

Look at this later, and Lynn thinks it's easy to have a solution.

Aztec insects are also absent, and they may have some problems. As Lin now knows, Montezuma II is still alive, but the large insects like the Shensha bus may not survive.

Next, Lin observed the water creatures in the canyon. Lin found that the reduction of oxygen had almost no effect on sea creatures, including marine arthropods. The marine arthropods did not use stomata but breathed with gills. It can be said that the ocean is basically It hasn't changed much. The special creatures such as ancient squids hid in underground caves in winter, and now they are pouring out again.

About ten days and nights after the arrival of spring, under Lin's statistics, almost 99% of the large arthropods died, but the small ones were basically unaffected.

In addition, a large number of reptiles lost their natural enemies to hunt them, they stood in front of a new jungle ...

What kind of changes will these creatures make?