Was there a human being 1.7 million years ago?

Now the study should be a little earlier than 1.7 million years.

About 4.5 million years ago, humans and apes began to diverge, giving rise to Australopithecus ramanacus, which later evolved from Australopithecus australopithecus 2 million years ago, and further developed into modern humans. Regarding the process of human development, it is generally divided into four stages:

1. Early ape-man stage. It lived between 3 million and 1.5 million years ago, and already possessed the basic characteristics of humans, such as being able to walk upright and make simple gravel tools.

2. Late ape-man stage. About 2 million to 300,000 years ago, the body resembled a man, the brain was large and round, and it could make more advanced paleolithic tools, and began to use fire, such as the Peking ape man in Zhoukoudian, Beijing, China.

3. Early Homo sapiens (hominid) stage. Between 100,000 and 200,000 to 50,000 years ago, it gradually broke away from the characteristics of apes and was very close to modern humans, such as Neanderthals in Germany.

4. Late Homo sapiens (newcomer) stage. About 4-50,000 years ago, the evolution of human beings at this time showed a significant acceleration, and the morphology was very similar to that of modern humans, and culturally, there were already the art of carving and painting, and ornaments appeared. For example, in 1933, the cave man on the top of Zhoukoudian Keel Mountain was discovered.

At this time, primitive religions had already arisen and had entered a matriarchal society. In the late Homo sapiens stage, modern humans began to differentiate and form, and spread throughout the world.

There were humans hundreds of millions of years ago. One of the most direct evidences is the footprints of giants that have been found all over the world. In 1987, the famous American paleontologist Michael Donald stumbled upon the footprints of a giant while exploring New Mexico, and this is what we know, we know that dinosaurs were only more than 100 million years old on the earth, and before that, there was no evidence that large animals had ever appeared.

As a result, many scientists have concluded that humans may have been the first to appear on Earth at least 200 million years ago, before birds and dinosaurs first appeared on Earth.

How did these footprints, almost the size of half an adult, spread around the world? Scientific research suggests that at least 200 million years ago, there was a human-like, erright-walking, strangely large creature on Earth that traveled between continents on foot, then became extinct for some unknown reason, and began to be ruled by dinosaurs. In addition to what scientists say, we can also see many descriptions of giants in some ancient texts, which shows that they are likely to be real.

In addition, although our current research on ancient life is based on fossils, we have not yet found one of the oldest fossils of our time, which proves that the origin of this creature is from this era. Since not all fossils have been preserved intact for hundreds of millions of years, there may be some ancient fossils that have been lost to history before we find them.

Hello, it is a pleasure to serve you and give you the following answer: There is a big difference between about 1.7 million years ago and about 1.7 million years ago, because a lot of changes have taken place on Earth during this time. About 1.7 million years ago, the climate on Earth changed a lot, and the process of continental drift began, which led to a huge change in the variety of organisms on Earth, resulting in the current biodiversity.

About 1.7 million years ago, humans also began to appear, and they began to learn how to use natural resources, how to make tools, how to organize society, and how to change the natural environment. The methods and practices to solve these problems can be divided into the following steps:1

Understand the changes happening on the planet: Learn about the changes happening on the planet and how these changes are affecting biodiversity by studying the geological record. 2.

Learn about human development: Learn about human development and how they used natural resources, how they made tools, how they organized society, and how they changed the natural environment by studying ancient civilizations. 3.

Develop solutions: Develop effective solutions based on the changes happening on Earth and human development to protect the planet's biodiversity and ensure that humans can continue to use natural resources. Personal Tips:

1.Understanding the changes taking place on Earth, and how these changes are affecting biodiversity, is key to addressing these issues. 2.

Understanding human development, and how they use natural resources, how they make tools, how they organize society, and how they change the natural environment, is also key to solving these problems. 3.Developing effective solutions to protect the planet's biodiversity and ensure that humanity can continue to use natural resources is an important step in addressing these issues.

Summary. That's an interesting question<>

There is no one definitive answer to this question, because the future survival of mankind depends on many unavoidable factors, such as natural disasters, wars, diseases, scientific and technological development, etc. Some are pessimistic, believing that humans could become extinct in thousands or hundreds of millions of years; Some are optimistic that humanity may achieve immortality or immortality through technological advancements and interstellar migration.

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That's an interesting question<>

There is no one definitive answer to this question, because the future survival of mankind depends on many unavoidable factors, such as natural disasters, wars, diseases, scientific and technological development, etc. Some are pessimistic, believing that humans could become extinct in thousands or hundreds of millions of years; Some are optimistic that humanity may achieve immortality or immortality through technological advancements and interstellar migration.

However, if we assume that the earth and the sun remain in their pre-state state, and ignore other factors that may affect the survival of human beings, then we can use a mathematical method to estimate how long the famous human beings will exist. This method is called the Doomsday Argument, and it was developed by the British philosopher J. DoomsdayRichard Gott) in 1993.

The basic idea of Doon's Law is this: Suppose you are one of all the people on Earth who have ever been born or will be born at random. Then your position in the sequence reflects the length of the entire sequence (i.e., the entire history of mankind).

For example, if you know that you are the 1000th person born on Earth, then you have a good degree of confidence that the entire sequence will not exceed 2000; If you know that you are the billionth person born on Earth, then you are very confident that the entire sequence will not exceed 200 billion. Specifically, Doon's law gives a formula to calculate the range of sequence lengths for which the pair of the response to the standby at any one position is: n = n x (1 f).

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