Some people say that humans were bacteria 3.8 billion years ago, but will bacteria evolve in the fut

Bacteria will definitely evolve, but it will take a long time, and many will disappear before they even have time to evolve.

Yes. Bacteria evolve, bacteria are the most basic life, the evolution of living things has always existed, and bacteria are no exception, they have been evolving.

Yes. All living things have evolved layer by layer, tracing back to the roots, they all have a common ancestor, that is, 3.8 billion years ago bacteria such as single-celled organisms, so humans were bacteria 3.8 billion years ago. Bacteria will evolve in the future, and not only bacteria, but all living things are constantly evolving.

About 3.5 billion years ago, the simplest and most primitive prokaryotic cell (single-celled single cell composed of cell membrane, cell wall, and protoplasm) organisms appeared on Earth.

Cyanobacteria, also known as cyanobacteria or blue-green algae, are large single-celled prokaryotes capable of photosynthesis. Cyanobacteria release oxygen during photosynthesis.

More than 3 billion years ago, it was precisely because of the emergence of cyanobacteria that the earth changed from an anaerobic environment to an aerobic environment. It can be said that cyanobacteria are the pioneers of life, and without cyanobacteria there would be nothing that followed. Cyanobacteria are very widely distributed from the ocean to the land, from the tropics to the north and south poles.

There is no accurate statement for red bacteria, presumably it means that blue bacteria release oxygen and red bacteria consume oxygen.

In past studies, the mainstream view is that when the earliest life on the earth was born, there was no oxygen on the earth, which led to the fact that all life on the earth was anaerobic in the early days, and the reason why all life on the earth today needs to breathe oxygen is because about 2.4 billion years ago, the appearance of algae and plants on the earth changed the composition of the atmosphere through photosynthesis.

However, in a study some time ago, scientists found that the past view of early anaerobic life on Earth is likely to be wrong, and some evidence suggests that oxygen existed on Earth about 3.5 billion years ago.

Some time ago, some researchers put forward the conjecture of the origin of the first life on the earth, believing that it was a mixture of RNA + DNA, then, we all know that microorganisms are the oldest inhabitants of the earth, as a member of the microbial camp of the bacterial population,Do bacteria keep evolving? Which bacteria evolved?

Speaking of which, because bacteria are invisible to the naked eye, human beings actually did not discover the existence of bacteria until the end of the 7th century, and before that, although some scientists believed that some diseases on the earth were caused by invisible organisms, but because this organism has not been found, it has not been recognized. When it comes to the oldest bacteria on the earth, they are "archaea", and they are also the oldest life forms on the earth, which are at least 3.8 billion years old in terms of time. It is believed that they first appeared near hot vents in the deep sea, and as single-celled organisms, they may have been one of the earliest life forms on Earth, and they continue to this day, and they also retain many ancient imprints on the body of modern bacteria.

Do bacteria keep evolving?

The answer is yes, because the early life on Earth was a group of cells that were invisible to the naked eye and evolved to eventually turn the Earth into a vibrant, multi-species world that gave humans the opportunity to emerge. And a very interesting point of view is that human beings evolved from bacteria, although it seems incomprehensible, but if you trace back to the source, this is still very reliable, because the earliest life forms on the earth are microorganisms, which are the most primitive monocytes, and later with the emergence of fungi, they gradually evolved into early algae plants, and later, bacteria also continued to evolve, and relatively advanced life forms appeared. After the Cambrian explosion of life, life on Earth began to flourish in real terms, and many animals began to appear, from invertebrates to vertebrates, which also laid the foundation for the emergence of humans, so there is nothing wrong with saying that the essence of human beings is a group of microorganisms.

And bacteria themselves as a kind of organisms, their body gene mutations are also the key to their evolution, especially in today's human abuse of antibiotics, some studies have also found that because of the use of antibiotics, many "superbugs" are constantly emerging, which also means that human beings seem to be accelerating the process of bacterial evolution. Therefore, there is a view that human activities lead to the accelerated evolution of bacteria and viruses, which may have posed a threat to human development, but further research is needed here, after all, so far, human understanding of microorganisms is still very one-sided, and the proportion of known microorganisms is also very small.

Of course, for example, the viruses we encounter now, they evolved from some ordinary bacteria, which led to the occurrence of diseases.

Evolution happens all the time. The various bacteria and viruses that have survived to this day have been obtained through a series of evolutions. Their original form was vastly different from what they must have existed now.

Bacteria, cyanobacteria and other protocoarse pyclonoids appeared. There are too many unsolved mysteries in the vast universe, and it is said that the earliest life in the universe was the earliest cell 3.5 billion years ago, which was the earliest life in the world. Traces left by primitive microorganisms have been found on a rock in the South African Ocean that is hundreds of millions of years old, proving its existence.

Under the action of cosmic rays, solar ultraviolet rays, lightning, high temperatures, etc., a series of small molecular organic compounds, such as amino acids, nucleotides, monosaccharides, fatty acids, etc., are naturally synthesized in the primordial ocean to form what Haldane calls "primordial soup", thus preparing the necessary conditions for the birth of life. Among them, carbon, which has tetravalent bonds, can be combined with other elements to form a variety of substances.