What is it that keeps life on Earth for a billion years without going extinct?

If the air, the environment, and the nutrients that are essential for sustaining life are not destroyed, life on earth will not be extinct. Although the earth has experienced various disasters along the way, fortunately, the conditions for our survival are all there.

These factors are, accidents and flukes, and there are also inevitable conditions under certain conditions, such as the earth's atmosphere, the protection of the moon, etc., and the earth's life time, which is relatively short, so relatively speaking, life has not been wiped out.

There are many factors that go into ensuring the continuation of life on Earth, the first of which is the right temperature. If the temperature is too high, animals and plants will be killed by heat, and if the temperature is too low, it will be difficult for animals and plants to survive, followed by water resources, water is the source of life, and there will be no life without water.

No, not only is it not extinct, but it is very active.

The first life on Earth was born in the primordial ocean 3.5 billion years ago and was cyanobacteria. Cyanobacteria, also known as cyanobacteria, blue-green algae, are unicellular organisms (organisms with only one cell) and prokaryotes (organisms made up of prokaryotic cells).

The first life on Earth - cyanobacteria.

At the beginning of the earth, there was no oxygen in the atmosphere on the earth, but there was a lot of carbon dioxide. Cyanobacteria inhale carbon dioxide through photosynthesis and release oxygen, and are also the earliest oxygen producers.

Cyanobacteria secrete a lot of sticky gelatinous substance that they use to anchor themselves to rocks in shallow waters, which is their main habitat (this method is still used by algal organisms and colonies today). When a large number of cyanobacteria come together, they will also secrete a large amount of gelatinous substance, which will not only stick to the cyanobacteria, but also to the sediments in the ocean, and over time, these sediments will be layered on top of each other to form stromatolites.

Stromatolites are the oldest fossils of life.

Although it is the oldest life on the earth, cyanobacteria are not extinct, and they are still active on the earth, and even often polluted by nitrogen, phosphorus and other elements cause eutrophication of seawater "red tide" and other phenomena, bringing harm to fisheries and aquaculture. By the way, if you want to see real stromatolites, go to Australia's famous Hamelin Pool.

The above content refers to Milley's children's book "A Brief History of Life".

Of course it's possible. Because the earth does not exist forever. Life on Earth is not something that existed as soon as the Earth appeared.

However, before the end of the earth, there will be very adaptable lower life. According to astrophysical calculations, in about 5 billion years, the Sun will expand into a red giant, engulfing the Earth entirely. All life on Earth would be extinct.

I think that the first group of life on Earth had intelligent beings, and they have reached a very high level of civilization after billions of years of civilization, and now they have moved away from the Earth or in the interior of the Earth or on the Moon.

Humans are only the second or nth group of life forms on Earth.

In fact, UFOs have been witnessed all over the world, but UFOs have not harmed humans, why? Because they are the earliest intelligent beings of the earth, to put it bluntly, they are the real masters of the earth. Now they don't bother with where they live, so they don't grab the earth with humans, but they want humans to develop, so they often come to visit the earth, help humans, and observe humans.

and to guide human beings in the early days of human civilization (from whom various gods in religion and mythology originate).

Of course not, the first organisms were bacteria, and bacteria still exist today.

Earth's first mass extinction! Known as the Ordovician mass extinction of life.

Summary. Hello, sorry for the wait. Hands-on research on the ability to adapt, reproduce and survive, and finally locked on a creature, that is, the rat we are most familiar with.

Don't underestimate the mouse, although it usually looks dirty, but its reproductive ability is extremely strong, it can mate with more than 80 species within 1 hour, and each litter can give birth to 5-10 small mice. As for survival, even if it falls from a tall building, it will be safe.

If the sixth mass extinction of the earth occurs, which organisms on the earth will become extinct one after another? Which ones will survive? Reasons and reasons?

What could have caused the sixth extinction? What will be the changes and implications of the world's geography? What are the effects of individual humans?

What are the trends in the development of human society (economy, politics, technology)?

Okay, please wait a minute, help you with the inquiry.

Hello, sorry for the wait. From the three aspects of adaptability, reproduction and survival, we finally locked on a creature, that is, the silver tung mouse that we are most familiar with. Don't underestimate the creature of the old mouse, although it usually looks dirty, but its reproductive ability is extremely strong, it can mate with more than 80 species in 1 hour, and each litter can give birth to 5-10 small mice.

As for survival, even if it falls from a tall building, it will be safe.

The biggest cause of extinction is probably the destruction of the natural environment.

Is there anything else<>

Yes, wait a minute.

Humans, human society.

Uh-huh, okay, please wait.

Hello, sorry for the wait. Species extinction is a huge loss of the biological gene pool, which directly affects human production, life and the ecological balance of the natural world. Reason for holding the stool:

The extinction of species is a natural process. Anthropogenic causes: ancient hunting, hunting and gathering; Modern pollution and destruction of ecosystems.

Good, good, good. Thank.

You are welcome!

1.5 billion. Life is the highest form of material evolution in the universe, and some people believe that life is only an insignificant accidental phenomenon in the by-products of the evolution of the universe, which can only appear on the earth due to various coincidences of time and space. Indeed, there are few, if not the earth, places in the universe that are necessary to meet the needs of the formation and evolution of life, and the sun that orbits the earth is one of the few stars with a stable ecosystem on its periphery; The Sun is also the second star, so that its planets have the presence of heavy elements such as carbon and oxygen necessary for life from the beginning of their formation; The size of the sun is suitable, so that it has enough time for life to form and evolve, and there is enough light and heat to incubate and breed life, and the earth itself is also a special planet, and its orbit is all in the ecological circle of the sun; It is the right size to disperse, so that its gravitational pull can retain water and the atmosphere, and the atmosphere is of the right thickness, that is, it blocks most of the ultraviolet rays, but does not block too much sunlight; The Earth has a strong magnetic field that protects life from the deadly bombardment of cosmic charged particles ......In short, the earth is blessed with unique conditions for life in many aspects, making it a rare home for life in the universe.

After the formation of the earth 4.6 billion years ago, the process of life formation began: the inorganic matter in the primitive earth formed simple organic matter under the action of the sun's ultraviolet rays, which were collected in the ocean through water currents, where they were transformed into complex organic matter: the process of forming life of these complex organic matter is still a mystery to this day, but there must be countless coincidences that happened luckily in the process of forming life on the earth; In this way, primitive life appeared 1.5 billion years after the formation of the earth.

Primitive life has evolved over a long period of time: 1.6 billion years ago single-celled organisms with a nucleus appeared, 700 million years ago multicellular organisms appeared, 100 million years ago terrestrial organisms appeared, 100 million years ago reptiles, 100 million years ago mammals, 70 million years ago primates appeared, 35 million years ago apes appeared, 4 million straight protos appeared, 500,000 years ago Homo erectus, until 10,000 years ago modern humans appeared; So in the 15 billion years of the history of the universe, the universe was full of technologies and civilizations created by Chi Hui's creatures. Life as we currently know it is limited to life on Earth, and scientists' optimistic estimates of extraterrestrial life and civilization are:

There may be 600 million planets in the galaxy alone, and as many as 1 million of them have technology and civilization!