history of earth

Earth's evolution process was as follows: - About 4.6 billion years ago, the Earth was born. At that time, the surface of the Earth was covered with magma and lava. The temperature was close to 5000 ° C. The remnants of the Big Bang kept hitting the surface of the Earth. - About 4.5 billion years ago, an asteroid named Theia hit Earth. The fragments formed the moon, and the tidal force of the moon slowed down the Earth's rotation. - About 4 billion years ago, a huge comet with water hit Earth. After that, Earth experienced a long-term rain that lasted for 3 million years. Earth became a blue planet, which laid the foundation for the birth of life. - 3.7 billion years ago, blue algae in the ocean began to photosynthesize, releasing large amounts of oxygen and growing explosively. - A billion years ago, Earth entered the Great Ice Age, which lasted for tens of millions of years. Earth became a huge ice ball. - About 500 million years ago, during the Cambrian-era, there was a great explosion of life, and all kinds of animals and plants began to be born. - About 200 million years ago, dinosaurs stepped onto the stage of history and ruled the earth for about 130 million years. - 65 million years ago, an asteroid with a diameter of about 10 kilometers hit the Earth, causing 90% of life to go extinct, including dinosaurs. - About 2 million years ago, the first Homo Spico was born on Earth. Humans gradually stepped onto the stage of Earth's history and ruled until now. During the Archean Era (2.4 billion years ago), the solid core was formed, the oceans were formed, life appeared, single-celled organisms appeared, and the Earth was occupied by the oceans. During this period, it also experienced the Huron Ice Age, where cyanacea produced oxygen under photosynthesis and large-scale biological extinction occurred. The second major cooling occurred when the Rodinia supercontinent was formed, and the sponge was the first animal to appear. After that, there was the Cambrian-era explosion of life in the Permian period, with the appearance of early vertebrae; the Ordovican-era extinction of land plants; the Sahara glacial period of early fish; the Devonian-era extinction of the carbonatite period of Pangu Continent; and the Caino-era after the extinction of dinosaurs, the ancestors of human beings appeared. At the beginning of the Earth's formation, it was one of the many new planets orbiting the sun. The original Earth was much smaller than it was now, and its surface was covered in magma. During this period, it was constantly hit by meteorites. Later, it was hit by a primitive planet the size of Mars. Its axis tilted 23° to form the four seasons, and the impact fragments formed the moon. Millions of years after the moon formed, the earth gradually cooled down and had a rocky and metallic crust. The moon also completed the cooling process. About 4 billion years ago, after the debris from the formation of the solar system hit the Earth, the Earth had oceans and an atmosphere slowly appeared. Life began to evolve from single-celled organisms to multicellularized organisms, from marine organisms to amputated organisms, terrestrial organisms, and sky organisms. After the extinction of dinosaurs, small mammals appeared on the stage, and humans multiplied and evolved on the African continent and went global.

In 1999, the American journalist David. Ike interviewed the knowledgeable South African wise man, Credo. Mutewa's interview was called the most shocking interview in the history of Earth. In the interview, Credo mentioned that in ancient times, the extraterrestrial lizardmen came to Earth as " gods ", modified human genes, transformed androgynous humans into men and women, taught humans language and knowledge, and even asked humans to mine. They would mate with human females to give birth to 'half-human, half-god' descendants to rule the human race. Credo also mentioned the appearance of the alien lizardmen, such as their height of more than three meters, slender figure, support of the body by the cartilages, different number of fingers on the hands, and some horns on the head. A lot of the information he said was related to ancient China mythology, such as the pronunciation of Nuwa and Pangu in Africa and the fact that they were believed to be lizardmen. The novel," The Couple's Universe: The Amazing Legend of Shen Zhen " is equally exciting. Everyone is welcome to click and read it!

There were many powerful creatures in the history of Earth. - Tardigrade was known as the strongest species on Earth. It was the only creature that could survive in space and had the ultimate ability that humans envied. - Megalodon was a huge fish and was still considered one of the largest fish on Earth. Its largest body size can reach 20.3 meters, and its heaviest weight is 103 tons. The average body size is 16 - 18 meters, and the average weight is 60 - 70 tons. - On the beach of the west coast of Africa, there was a large soft-bodied conch that looked like a snail. It was called the African Neptune snail. Its shell could be up to 30 centimeters long and could defend against enemies. Its body was considered to be a giant among mollusks. - Although the life of a golden cicada was only about four to six years, it could not be drowned or frozen to death, as if it had a special ability.

The six stages of Earth's development were as follows: 1. The early stage of the Earth's formation: About 4.5 billion years ago, the Earth was born from frequent and violent rock collisions. At the beginning of its formation, the outside was constantly hit by meteorites, and the inside was constantly collapsing and undergoing nuclear reactions, heating up to form hot lava. Heavy matter collapsed into the core under the effect of gravity, while light matter stayed on the surface to form an extremely thin crust. Volcanic activity was frequent, and the gases ejected from volcanoes rose to form the primitive atmosphere. The primitive atmosphere formed simple organic matter under the influence of environmental factors such as thunderstorms, intense sunlight, and high temperature. 2. The age of the great impact and the formation of the oceans: About 4 billion years ago, the debris (asteroids and comets) left behind after the formation of the solar system slammed into Earth, lasting 20 million to 200 million years. The comet contained a large amount of water resources. After the impact, the Earth had an ocean and an atmosphere slowly appeared. 3. Origin and early development of life: The earliest life appeared 3.8 billion years ago. It was originally a single-celled organism, located near the crater of the Earth's seabed. From single-celled organisms, they gradually evolved into multicellularized organisms. From marine organisms, they developed into amphibious organisms, then to terrestrial organisms. During the dinosaur era, there were even sky creatures. 4. Proterocosmic Era: 2.5 billion years ago, the single-celled microorganisms, blue-green algae, appeared on Earth. They produced a large amount of oxygen and triggered a major oxidization event. The greenhouse gases such as carbon dioxide and methane were gradually replaced by oxygen. The concentration of oxygen rose sharply, and the concentration of greenhouse gases continued to decrease. The global climate became cold, and the polar ice cap formed. Finally, the entire Earth was covered in ice and snow, entering the Snowball Era. This period lasted intermittently for about 1.1 billion years, but microorganisms still lived under the ice. 5. Changes on Earth after the asteroid impact: About a billion years ago, an asteroid hit Earth. The shock wave from the impact caused the ice to boil and produce a large amount of greenhouse gases, melting the global ice. At the same time, it also caused the Earth's continental plates to split and re-form the new continent, the Rodinia supercontinent. Continents, mountains, rivers, lakes, and seas began to form. Earth was about to enter the next geological era. 6. Modern biological development and the emergence of humans: After the extinction of most dinosaurs, avian dinosaurs evolved into today's birds, small mammals replaced dinosaurs on the stage of history, humans multiplied and evolved on the African continent, and then gradually walked out of Africa and into the world.

I recommend a few novels to you. " From an Unserious Witch to Farming ", a light novel written by Usilflo and written by Meyer. It was a fantasy novel. The story was very interesting. The witch was considered a bad woman. After the knight became a witch, he only lived for his heart. The Gu family even made mechas to farm. The female lead, Vera, was a carnivorous witch. There was also " Strange Descends on the Leaf ", a light doujinshi novel created by the Fall of Destruction. The main character, Hatata, transmigrated to the Naruto World. When he was three years old, he saw a ghost and had a cheat that was three years late. It was a novel and strange Naruto doujinshi novel. " The Great Emperor Scripture " was a fantasy novel written by Tianya Zhumeng. The story began when the mysterious star scroll was unearthed and then disappeared. The author had written millions of novels before, so you can collect them without worry. " The Omnipotent Supervisor " was Mu Huanren's urban entertainment star novel. It was also the new novel of a Korean entertainment boss, and it had a familiar coquettish style. " The Jade Emperor of the Primeval World " was a Xianxia novel written by Meow, who knew how to read. The male protagonist, Haotian, transmigrated into Hongjun's child and became the Great Heavenly Venerate of the Three Realms in the future. While waiting for the TV series, you can also click on the link below to read the classic original work of "Dafeng Nightwatchman"!

|time| incident| |--|--| |4.6 billion years ago| The earth had just been formed, and there were many volcanoes on its surface. The earth was in a state of magma.| |3.8 billion years ago| Creatures appear on earth| |3.5 billion years ago| Discovered the earliest pronuclear fossil| |A billion years ago| Eukaryotes appeared, algae increased and most lived in the ocean.| |600 - 700 million years| The Ediacara fossil group was discovered in the Precambrian Period. It was a mollusk fossil. The representative animals of this period were the kimberley worm, dickinson jellyfish, etc. The fate of this group of creatures was debated whether it was extinct or not.| |545 million years| Earth officially entered the Phanerocosm, and life began to erupt (often mistakenly called the Great Explosion)| |540 - 487 million years| In the Cambrian-period, the earliest fossil was discovered by the American paleologist Charles Walcott in Burgess, Canada. The China scientist Hou Xianguang discovered the Chengjiang fossil group in Chengjiang, Kunming, even earlier (540 - 530 million years ago). During this period, arthropods, annelids and other organisms appeared.| |440 million years| Earth entered an ice age with a large number of volcanic eruptions, and more than 50% of species went extinct.| |400 million years ago| Vertebrate animals appear, sea creatures increase, ocean eutrophy leads to lack of oxygen at the bottom of the sea| |360 million years ago| A mass extinction event occurred, and more than 40% of the creatures on Earth went extinct.| |245 million years ago| Meteorite hit Earth and caused a large-scale volcanic eruption, causing more than 70% of life to go extinct.| |250 million years ago| Dinosaurs appear in the Middle Ages| |65 million years ago| Meteorite hit the earth, dinosaurs went extinct, 85% of life went extinct| |7 million years ago| humans appeared| |100,000 years ago| Humans evolved| |10,000 years ago| Humans settled on all continents, and the earth entered the Holocene.|

Earth's evolution could be roughly divided into three stages. The first stage was the formation of the Earth's sphere, with a time limit of about 4600 to 4200Ma. At the beginning of the Earth's birth, it was a hot ball composed of hot liquid materials (mainly magma). As time passed, the surface temperature dropped, and the solid core gradually formed. The denser materials moved to the core, and the less dense materials floated on the surface of the Earth, forming the Earth, which was mainly composed of rocks. The second stage was the Archean and Proterocosmic periods, with a time limit of 4200 - 543Ma. The Earth continuously released energy. The water vapor, carbon dioxide, and other gases released by high-temperature magma eruptions formed the early atmosphere (primitive atmosphere). As the water vapor increased, it condensed into rain and fell to the surface, forming the primitive ocean. The third stage was the Phanerozoon period, which lasted from 543Ma to the present. During this period, life flourished, geological evolution was rapid, geological processes were rich, and geological bodies were widely preserved. It was the main research object of geological science, and the basic theory and basic knowledge of geological science were established.

Based on context alone Earth was formed about 4.6 billion years ago as a cloud of gas and dust. In the early stages of its formation, the Earth was a hot sphere, mainly composed of molten matter. As time passed, heavier materials such as iron and nickel-based materials gradually gathered toward the center to form the Earth's core, which released a large amount of heat. After that, the Earth began to gradually cool down, and lighter materials such as rocks began to solidify on the surface of the Earth to form the crust. During this process, Earth also suffered a large number of asteroids and comets. About 3.8 billion years ago, the environment on Earth gradually stabilized, and primitive oceans began to appear. The appearance of the ocean provided a cradle for the birth of life. In the billions of years of evolution, the composition of the Earth's atmosphere was also constantly changing. In the early days, the atmosphere was mainly composed of carbon dioxide, methane, and so on. With the emergence of photosynthesizing organisms, oxygen began to accumulate in the atmosphere. Plate movement also played an important role in the evolution of the Earth. The collision and separation of the plates shaped the Earth's mountains, ocean basins and other terrains, and affected the Earth's climate and biological distribution. From the perspective of life, simple single-celled organisms were born in the early oceans, and then gradually evolved into multicellularized organisms, plants, and animals. After many large-scale extinction and the outbreak of new species, it gradually formed the complex and diverse ecosystem today.

Cultivators were a fictional concept that usually appeared in fantasy novels and anime. In real life, there were no real cultivators on Earth. However, in the process of exploring the universe, humans had discovered some alien life forms, including the possibility of cultivators. However, we have yet to find any conclusive evidence that the Cultivators have existed.