In the subsequent 14th rock painting, various tall Martian plants appeared again, but at the same time a scorching sun appeared above them.

Under the scorching sun, the lush branches and leaves of Martian plants began to wither.

In the 15th to 30th petroglyphs, the Martian plants may have been affected by the scorching sun and gradually became extinct. At the same time, a group of primitive cells appeared at the bottom of the few remaining oceans on Mars.

Li Mo understood that it was the high temperature that caused life on Mars to return to its original state!

Starting from the 31st rock painting, primitive life groups began to evolve rapidly at the bottom of the ocean. The first platyhelminthes and the first annelids appeared one after another... Until the 51st rock painting, the first crawling animal appeared on the surface of Mars.

animal.

At the same time, the scorching sun, which symbolized high temperature, also disappeared from the rock paintings. Plants returned to the surface of Mars again, but their era was gone forever, and animals became the overlord of Mars.

Survival of the fittest is nature's choice.

When Li Mo was studying biology, he was deeply puzzled as to why living things are divided into two evolutionary paths: plants and animals. Compared with plants, which only need sunlight to carry out photosynthesis, the living conditions of animals are much more demanding, not only needing oxygen.

, food also needs water.

But why haven’t plants replaced animals and become the only choice for biological evolution on earth?

Martian rock paintings give a possible answer. Although plants do not need food and oxygen to survive, they have a fatal flaw, that is, their state is highly stable. This stability prevents them from moving around like animals and looking for food.

Necessary water resources. Therefore, when Mars experienced severe high temperatures due to the solar explosion, the Martian plants on the surface became extinct one after another, and animals that were more adaptable to nature boarded the stage of biological evolution on Mars.

The environment of a planet is not static, so life will choose two different evolutionary paths at the same time.

In subsequent rock paintings, various strange animals appeared in turn, until the 96th rock painting.

A humanoid creature with three eyes on its face, holding a torch, appeared in the rock painting.

Erlang Shen in Earth Mythology?

Li Mo immediately realized that this creature that looked like Erlang Shen was the owner of Mars because it had complex facial expressions!

The carver of the mural specially carved a smile on it, which is a treatment that the various animals and plants on the rock paintings did not have before.

Sure enough, in the next rock painting, the protagonist was replaced by Erlang God of Mars.

The Erlang Gods of Mars are obviously intelligent creatures. They use various animals and plants on Mars to provide convenient conditions for their survival. As time goes by, the content on the murals becomes more and more modern.

Towering trees were transformed into skyscrapers by Mars Erlang God.

Even in the 161st petroglyph, there are vehicles similar to cars, which are connected to the big trees on the roadside with a line.

Is this charging?

Li Mo confirmed the correctness of this guess in subsequent rock paintings, because a triangular flying object appeared in the Martian space. When the flying object was parked on the ground, it was also connected to the big tree by a line.

Li Mo has determined that intelligent creatures like Mars Erlangshen have unique talents in using plants. They can use large trees as solar power panels.

"What seems to be missing from the technological development of the Martians?" He frowned in confusion, turned around and reviewed the murals just now.

Entering the industrial age - discovering electricity - using solar energy - electric cars appear...

"No internal combustion engine!"

Li Mo discovered that Mars Erlangshen's technology lacked the internal combustion engine link. They directly used electricity as the driving energy source, and the only way to collect electricity was through solar trees!

Contrary to what most people on earth believe, the first car on earth was also driven by electricity, which was a full 40 years earlier than gasoline cars. Electric cars have the advantages of simple structure and convenient operation, but they have a fatal shortcoming.

That is, the battery life is short and the power is weak. Then gasoline cars rose and became the mainstream of human transportation until the emergence of Moxing batteries.

Why doesn’t Mars Erlang use gasoline cars as a means of transportation?

Li Mo suddenly thought: There is no oil on Mars!

When talking about the origin of oil, the big-headed Pajero people said that oil is the sower civilization of the super civilization of the universe, a gift to the planet that is about to give birth to intelligent creatures. It is precisely because of receiving this gift package that the earth can develop rapidly in the primary civilization stage.

.

Mars does not seem to have such good luck.

Then their only option is to harness the energy of the star - the sun.

Most of the last few rock paintings describe how Erlang Shen of Mars used solar energy. They planted a super solar tree on the surface of Mars. The branches and leaves of this big tree penetrated deep into space, covering the entire surface of Mars.

The energy from the sun hitting the surface of Mars is collected by the leaves of big trees, and then transmitted back to the ground through countless thick cables.

"Plant version of the Dyson Sphere? This is too awesome." Li Mo couldn't help but admire the ability of Mars Erlang to use plants. It seems that every intelligent civilization has its own unique technology.

The last rock painting is very simple, a huge sun appears in the Martian sky.

"This is?"

The huge sun has appeared once in rock paintings. The last time it appeared, it caused the complete collapse of plants, allowing animals on Mars to emerge.

So what about this time?

Could it be that the Erlang God of Mars became extinct due to anomalies in the sun?

Li Mo discovered that there seemed to be a stone gate next to the rock paintings. There were several lines of strange symbols carved crookedly on the stone gate.

Martian text?

The rock paintings inside the cave almost completely describe the evolution of life on Mars. So what is behind the stone door?

"Civilization room!"

An alien word from the Pajero civilization popped into Li Mo's mind. As a civilized race, the civilization room exists to record the history of the development of this civilization. It is also very rare in the entire universe. After all, not every civilization has these "

Leisurely and relaxed."

The reason why Li Mo was so excited was that, on the one hand, through the Mars Civilization Room, he could learn about the history of the civilization development of Erlang Shen on Mars. More importantly, a super civilization in the universe, the Library Civilization, was very interested in the true history of this civilization.

interest.

The Pajero civilization used the collected history of alien civilizations to exchange many technologies and high-tech products with the library civilization, such as the learning assistance system in his mind.

Maybe he can also exchange the true history of the Erlangshen civilization on Mars for technology suitable for use by humans on Earth.

Behind the stone door in front of us, there might be a Martian civilization room, where the civilization history of Erlang Shen of Mars is quietly waiting for him to discover.
Chapter completed!