How long can humans live on Earth Click for answers

According to scientists' estimates, if there are no major accidents, the entire human race will live for about 6.7 million years. It is said to be inferred from the theory of species development.

The earth's resources can sustain human beings for many years according to the consumption standards of certain resources.

Whether human beings can make rational use of resources.

2. Because in the age of 40 million years, the energy consumed is less than 1% of the total amount of the sun.

3. Excessive consumption of resources (similar meanings are sufficient).

4. The sun will continue to provide light and heat ,...... to the earthAt most, there is only a very small wobble. (Answer the first sentence is sufficient).

a.Controlling human depletion of resources. b.Control the destruction of the living environment by human beings. （

It seems that the person who lives the most is not more than 130 years old in France.

In 5 billion years, the Earth will be destroyed.

What scientists say.

Excessive anxiety.

F2There is the consumption of resources caused by the production and living systems of human beings.

3.In the past 400 years, mankind has made achievements in industry, agriculture, science and technology. Comparison highlights that in the past 400 years, human beings have consumed the limited resources of the earth enormously, which has led people to think deeply about "how long can humans live on the earth".

1.People are worried.

2.There are human beings who are born and self-produced, and who live second-yearly.

The consumption of resources is generated. du

3.In the past 400 years, mankind has made great achievements in industry, agriculture, science and technology. Comparison highlights that in the past 400 years, human beings have consumed the limited resources of the earth enormously, which has led people to think deeply about "how long can humans live on the earth".

Our teacher just finished yesterday...

It depends on what we humans do! If human beings are so obsessed, wantonly abusing resources, and not protecting the earth well, then maybe the time is long and short, and there is no limit!

Here, I would like to call on everyone to protect the earth, be a "low-carbon citizen", and keep the end of the world away from us!

1.People are worried.

2.There is human production.

The consumption of resources generated by source and life two.

3.In the past 400 years, mankind has made achievements in industry, agriculture, science and technology. Comparison highlights that in the past 400 years, human beings have consumed the limited resources of the earth enormously, which has led people to think deeply about "how long can humans live on the earth".

The question of "how long can humans live on Earth" is whether the sun can provide the earth with light and heat continuously and stably, and on the other hand, the author says that "the sun has been providing the earth with light and heat for up to 40 million years." On what basis does he say this?

It can be answered in the original sentence) 3 In the first paragraph, the author says, "But the real threat to humanity comes from humanity itself." What does a threat "from humanity itself" mean? 4.

Write your proposal in concise language.

1. How many years can the earth's resources maintain the normal life of human beings according to the consumption standards of certain resources 2. The self-evolution of stars 3. The national consumption of the earth's resources 4. Do not destroy nature and protect the ecological balance!

1.This paper answers the question of "how long can human beings live on the earth" from three aspects: the first is (whether the sun can continuously and stably increase light and heat to the earth), the second is (whether the earth's resources can maintain the normal life of human beings according to the consumption standard of a certain resource), and the third is (whether human beings can make rational use of resources).

2.In paragraph 3, the author says that "the sun has no problem providing the earth with light and heat for up to 40 million years" on the basis that (in 40 million years, the energy consumed was less than 1 of the total amount of the sun. ）

3.In paragraph 4, the author says that "but the real threat to humanity comes from humanity itself", and that the threat from humanity itself refers to the rational use of human resources.

The world's earliest ape-man fossil was found in 1891 on the island of Java, Indonesia, dating back 60 to 800,000 years. The Javanese ape-man, together with the Peking ape-man discovered in 1927 in Dazhoukoudian, China, was once recognized as the "earliest" human in the world. At that time, it was believed that the history of mankind was no more than 100,000 years old, and the first human beings appeared in Asia.

The Shandong Yiyuan ape man, discovered in China in 1981, belongs to the same era as the Beijing ape-man. However, this theory of the earliest origin of human beings has been overturned by two archaeological discoveries in China. After the liberation, archaeologists successively found ape-man fossils in Lantian in Shaanxi Province and Yuanmou in Yunnan Province.

The Lantian ape-man is 1 million years old, and the Yuanmou ape-man is 1.7 million years old. So, how long is human history? In the last two or three decades, archaeologists have discovered many ape-man fossils on the African continent, giving us a new understanding of human history.

In 1959, an almost complete fossilized ape-man skull and labor tools were found in Tanzania, dated to 1.75 million years ago. In 1972, fossilized ape-man skulls, leg bones and stone tools were discovered in Kenya and dated to 2.6 million years ago. In 1973, it was reported that fossils of ape-man were found in Ethiopia about 3 million years old or 3 million years ago.

From this point of view, human history is not 800,000 years, nor 1.7 million years, but more than 3 million years. As for the earliest place of human appearance, it remains to be determined by more archaeological discoveries.

According to the excavation of archaeologists, the BAI unearthed in Ethiopia, Africa, about 3 million years ago, the "DAO Lucy" girl is generally considered to be the original ancestor of humans.

Human evolution has gone through a long process.

About 1.7 million years ago, the Yuanmou people in Yunnan Province, China, began to approach modern humans.

About 700,000 years ago, the Peking Man of China, the Cro-Magnon of France, and the Neanderthal of Germany were representatives of early Homo sapiens, who already knew how to use natural fire.

About 30,000 years ago, the Chinese cave man was a representative of the late Homo sapiens, and the cave man already knew how to make fire by hand and began to make simple stone tools.

About 7,000 years ago, the Hemudu people of Yuyao, Zhejiang, China, were modern people with rudimentary wisdom, and the Hemudu people knew how to grow crops such as rice.

Scientists believe that human beings can survive on the earth for another 5 million years, because life on earth is actually very eternal and very long-lasting. Therefore, human beings can live for a long time as long as they keep the environment free of pollution.

Human beings survive on the earth, is determined by human beings themselves, with the continuous progress of science and technology, human beings have also continuously produced new technologies, in the face of some diseases and, natural disasters, human beings have effective solutions and ways to dodge, so for human beings, we can still survive for a long time, even if the life of the sun is exhausted, human beings are likely to find alternative energy sources to the sun and continue to survive.

There are two points of view. The first idea is that in 100 million years, the sun will become a red giant due to the depletion of its inner core, and the earth will also be swallowed up by the expanded sun, and then the earth will be like hell, becoming a hot environment completely unsuitable for life.

Another point of view is that through 3D computer simulation, various factors, including future oxygen, oceans, crustal activities, etc., have been simulated on humans, and it is found that the earth will still be habitable for people in the next 2 billion years, which is also a bit surprising.

If human beings do not cherish peace and are unable to reconcile their internal contradictions, then war will bring disaster in a short time; If humanity can come together, then humanity will be able to survive on Earth until the end of the sun's lifespan (50-6 billion years).