Chapter 399: The History of the Earth (1)

It wasn't until the students in the classroom were basically scattered that Zhang Binhui recovered from the shock. ()

It turns out that we humans are so powerful that we can actually create a world!

Francis had apparently embraced this knowledge for a long time, so he behaved much more naturally. Seeing that Zhang Binhui was recovering, Francis suggested that he go to the library.

"There's a lot more to it, and if you're really interested in these things, go to the library often, it can help you."

Zhang Binhui didn't hesitate at all, he immediately rushed to the library.

The setting here is similar to that of a university, there must be an enchantment in the library, and there is no end in sight to the long bookshelves.

There are all kinds of jade slips on the bookshelf, all of which are neatly arranged in different categories. At this time, Zhang Binhui was most interested in the history of the solar system, and too many mysteries were condensed in his mind.

What if humans found an ecosystem that was already ripe? What will we do?

We discovered the earth a million years ago, according to the research of earth science, the history of the earth is 4.6 billion years, and life on the earth began to reincarnate when it was 400 million years old.

What about those living forms? Do they really disappear naturally?

Zhang Binhui quickly found relevant information, and the history of the earth was unfolded in front of him: the earth was often hit by interstellar objects in its juvenile stage, and the energy released by these impacts was extremely huge, and the temperature of the impact point was as high as more than 16,000 degrees.

Metals such as iron and nickel melt and sink into the center, while others evaporate to form the Earth's original atmosphere, which is composed of 80% water vapor and the rest carbon monoxide and nitrogen.

The atmosphere, which is mainly composed of water vapor, caused a strong greenhouse effect, which soon brought the temperature of the entire earth to 12,000C, and the rocks melted, causing a sea of magma to form on the surface of the earth. The magma sea, in turn, controls the greenhouse effect, keeping the Earth's temperature at a certain level.

Then, a much larger star crashed into the Earth. It was a large creature that was half the diameter of a globe, and it slammed into the Earth from its oblique spikes, smashing parts of the Earth to pieces.

The planet itself shattered, and some of the debris fell back to Earth, while others came together to form the Moon.

After the earth matured and stabilized, because of the protection of the atmosphere, the stars that hit her were relatively reduced, its temperature gradually decreased, the surface magma cooled into the earth's crust, and the water vapor in the primordial atmosphere condensed into water and fell to the earth's surface, forming primordial oceans and rivers.

At the same time, the sun's ultraviolet radiation, which breaks down water vapor in the upper layers of the primordial atmosphere into oxygen and hydrogen. Hydrogen escapes into space, while oxygen remains in the atmosphere.

It is the adjustment of nature that adapts to the environment in which life arises.

Proteins and nucleic acids were gradually formed in the primordial oceans, and each developed a self-replicating mechanism. When the earth was 500 million years old, proteins and nucleic acids combined and coexisted, and primitive life was born.

In the early days, primitive life developed in the ocean, mainly some bacteria. At the same time, due to the tectonic plate movements of the earth's crust and mantle, the huge "Pangea" was formed on the Earth when it was 1.2 billion years old.

The single-celled organisms in the oceans have long since evolved into multicellular organisms, just like today's plants, which absorbed carbon dioxide and released oxygen through photosynthesis.

It took a long time for this little life, which can only be seen under a microscope, to fill the Earth's atmosphere with oxygen. In this way, the natural environment that adapts to the emergence of complex life has been achieved, which is a major breakthrough in life.

So lichens were the first to come ashore, they began to decompose the rocks, and the natural differentiation formed the soil on land, and the environment became more perfect.

More life has climbed onto the land, and new habitats are being developed until every corner of the earth is reached, and the earth becomes a paradise for life.

Various life forms flourished on Earth, and over the long years, different species began an epic cycle until the emergence of human colonization.

Zhang Binhui breathed a long sigh of relief, and his body was retracted from the table, because he was too engaged, he only felt a little backache now.

It turns out that the history of our earth has come like this, and the power of time is really powerful.

Soon, a line of small words in the corner of the holographic data caught his attention: the mass extinction of life on Earth.

According to simulations, there have been five mass extinctions of life on Earth, basically every 62 million years, which is a strange situation.

This line of small words attracted Zhang Binhui's attention, and he immediately called up the relevant analysis.

This study was proposed by a scholar 300,000 years ago, who studied the history of the development of the earth very carefully, and then he discovered this law.

Mass extinction refers to large-scale mass extinction, also known as extinction, which is not always uniform and gradual.

Entire families, whole orders, and even whole classes of organisms have completely disappeared in a very short period of time, or only a very small number remain, and this has happened five times on Earth.

In the process of cluster extinction, it is often the case that all species in the entire taxon, regardless of their position in the ecosystem, are not spared, and often many different groups of organisms become extinct together.

Of course, life is always tenacious, and there are always other groups that have survived, and some have even been born or flourished.

Large-scale mass extinctions have a certain periodicity, occurring once every 62 million years, but mass extinctions have the greatest impact on animals, while mass extinctions of terrestrial plants are not as significant as those of animals.

The scholar cited the relevant data that the first mass extinction of life occurred in 4. 400 million years ago.

The Ordovician, the name of the geological chronology, is the second period of the Paleozoic era, which began 500 million years ago and lasted for 65 million years.

At this time, the climate is mild, the shallow sea is widespread, and many parts of the world are covered by shallow sea water, and marine life is unprecedented.

In the vast oceans of the Ordovician, marine invertebrates flourished like never before, and a large number of invertebrates of various phyla lived.

In addition to the taxa that began to flourish in the Cambrian, other taxa were further developed, including penoliths, corals, brachiopods, sea lilies, bryozoans, and molluscs.

Nautilus were the most powerful sea creatures of this period, they were huge and carnivorous, and it was thanks to the presence of a large number of carnivorous nautilus that trilobites evolved defensive needles.

In the 4th year ago. At the end of the Ordovician period, 400 million years ago, the first species extinction event in the history of the earth occurred, and about 85% of the species were wiped out.

According to the scholar's analysis, this species extinction is caused by global climate cooling.

In about 4. 400 million years ago, massive glaciers cooled ocean currents and atmospheric circulation, lowering the temperature of the entire planet, locking up water by glaciers, lowering sea levels, and destroying previously rich coastal ecosystems, ultimately leading to the extinction of 85% of species.