Deep Space Planet Leader

Zhang Yuan carefully observed this so-called tree core. There are some hollow screens in the middle, and the overall density is much lower than that of steel.

Yamamoto said astonishingly, "These tree cores are very good materials for the Riley civilization, providing shelter and food... but they are also a great crisis that destroys the entire ecological chain!"

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He hung a little piece of wood with a knife and lit it with a lighter.

Suddenly, the whole burning phenomenon produced a faint smoke.

Zhang Yuan covered his nose and smelled a burnt smell of plastic burning, looking thoughtful in his heart.

Everyone smelled this smell.

"It's really like plastic."

"What is plastic?"

Zhang Yuan explained: "It is brought out from oil It is a kind of polymer material that is very cheap. The Earth civilization was once widely used, but after the oil is exhausted, it is useless and can only be converted to a large number of renewable materials."

Yamamoto clicked again. Click the button, "Did you smell it? This kind of tree core is a natural polymer material, and its chemical composition is a bit similar to the plastics widely used on Earth, which is a very stable chemical substance."

An image is displayed on the screen. It is a human geographer who has found a fossil vein in a plain area: a large organic mine with a reserve of 300 million tons!

"Almost all the components of this organic mine are the core of the World Tree. Because it has been buried under the ground for a long time, it has become something similar to coal. It is even better than coal and has a higher calorific value. High."

Some creative biologists have already reacted. Why does Professor Ichiro Yamamoto think that this planet is about to undergo a mass extinction event!

Why?

"Because these tree cores... can't be decomposed by native microorganisms! So they accumulate in large numbers."

Zhang Yuan was suddenly a little speechless in surprise. Humans can actually Witnessed... a mass extinction!

The so-called "World Tree" of the Riley people, in this planet, is undoubtedly a very good species, which provides food and a place to live for the Riley people.

Because of the strong environmental adaptability, "World Tree" is almost everywhere in the planet.

But also because of World Tree's "tree core", evolution is too advanced, making the native microorganisms completely unable to decompose this highly stable substance.

The large number of organic mineral veins discovered by humans on the plains are in the original forest. Other fibers rotted, and only the core of the tree accumulated and settled underground.

Why do you say that this will cause mass extinction?

The reason is very simple, because the carbon cycle of the local planet is destroyed.

In the normal situation of aerobic breathing, consumers inhale oxygen and carbon dioxide, and producers inhale carbon dioxide to produce oxygen, forming a carbon cycle.

But now, a large amount of carbon has become the core of the tree sinking under the ground, which will cause the concentration of carbon dioxide in the atmosphere to gradually decrease. Plants do not have enough carbon dioxide and die in large quantities. Animals also died in large numbers.

The carbon dioxide concentration of this planet is about five thousandths, several million years, after tens of millions of years, the carbon dioxide may be reduced by 60%-80%. At this time, it is difficult for plants to reproduce. Will produce real lethality.

A biologist sitting below asked: "There are substances that cannot be decomposed by native microorganisms? Professor Yamamoto, do you confirm that your scientific research is correct?"

This question is explained by an expert who is personally in charge of geographic scientific research: "We have found the active ingredients of tree cores in soils all over the world... Although these substances are high-molecular organic matter, they will become small due to physical effects. The fragments, but even the decomposing speed of these fragments is extremely slow, and they can exist stably for thousands of years or even tens of thousands of years. This shows that the planet's decomposer cannot effectively decompose the tree core of the World Tree."

"How do you say, it is like plastic. Although small plastic particles are not poisonous, they will not be decomposed when buried under the ground for a long time. The active ingredients in the core of the tree are even more stable than plastic and can There is a longer time."

Zhang Yuan nodded.

This is the origin of the great crisis.

The expert continued: "Ladies and gentlemen. This kind of environmental mutation caused by plant evolution has not never happened on Earth..."

"2.4 billion years ago, there was a'big oxygen event' on Earth. The big oxidation event changed the composition of the minerals on Earth and made the emergence of animals possible in the future."

" That is to say, the oxygen content of the entire planet has soared, which is mainly due to the substantial evolution of plants, wood fibers have begun to form, and fungi that decompose plant fibers have not yet appeared. This has led to a sharp decrease in the concentration of carbon dioxide in the air."

"A large amount of carbon elements were solidified and deposited underground with the life cycle of plants, so that high-quality coal was formed in the Carboniferous after that, which benefited humans who were born later."

"Earth The ability of decomposers is not strong enough, the proportion of carbon dioxide in the atmosphere has dropped, and the proportion of oxygen has risen sharply. In the late Carboniferous, it reached the stage of the highest proportion of oxygen in the atmosphere in the history of the Earth. The sudden change in the environment caused the mass extinction of organisms, and then produced a large amount of organisms. Explosion."

Everyone here understands the rhetoric in this regard.

"And Riley Star is also in such a special stage. With the accumulation of time, more and more World Trees die, and more and more tree cores are accumulated."

"This planet has been formed for a long time. The concentration of carbon dioxide in the atmosphere is not too high, so where does the carbon come from? After the carbon dioxide in the atmosphere is consumed, it is of course the carbon in the organism... Animals have Birth, aging, sickness and death, as long as there are more dead creatures than born, with the destruction of the entire world carbon cycle, more and more carbon elements will be buried in the ground!"

"The atmosphere lacks carbon dioxide, and there will be fewer plants and fewer animals. The concentration of oxygen will increase instead.

"The mass extinction, that's it, begins! "

"In other words, the mass extinction has begun, but these Riley people don't know it. After tens of thousands of years, animals and plants are scarce, and a large amount of carbon has become this plastic-like substance... This is the theory. "

Everyone sat quietly in their seats, thinking, thinking.

After the extinction of this creature was exposed nakedly, it was serious and full of heavy killing. intent.

It comes from the killing intent of planet itself.

This murderous intention has always been slow and firm.

Even, as an interstellar civilization Humans are hard to stop, this kind of power comes from the planet itself.

……

(PS: I don’t have any comments on the silly online games, it feels so passionate to write. !

Especially in the past few days, it was still pushed in strong winds, but the big red flag was overshadowed by that big red flag, which resulted in unsatisfactory growth in the collection...Ah, it’s bad luck, but let’s celebrate three more! )

(The National Day military parade is still quite spectacular, and the testimonials will not be published. I like the DF41 nuclear bomb the most. Although it cannot be used in wars, it means real safety!)

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