Xinhua News Agency, Beijing, November 15 New Media Special News US media said that majestic blue whales have been in the sea for about 4.5 million years, while Neanderthals have been extinct for tens of thousands of years. However, do those animals represent all species? How long does a species usually last before extinction? According to a report from the American Fun Science website on November 8, we now find that the answer may be completely different from usual ideas.
Xinhua News Agency, Beijing, November 15 New Media Special News US media said that majestic blue whales have been in the sea for about 4.5 million years, while Neanderthals have been extinct for tens of thousands of years.
However, with the continuous development of science and technology, many scientists have begun to study how to resurrect animals that have disappeared on the earth. This time, the editor will introduce to you the five extinct animals that scientists are preparing to resurrect.
The earth has experienced more than four billion years of evolutionary history, and the earth species have experienced more than 500 million years of evolutionary history from single-celled animals to the present. Among them, they have experienced five mass extinctions and countless small species. Extinction process.
Species extinction We often hear such sayings as”some species is on the verge of extinction” or”if human beings protect the earth’s ecology, such and such species will go extinct.” So what does”extinction” mean? What kind of”mass extinction” has the earth experienced? Extinction”Extinction”. Conceptually, when all surviving individuals of a species die, then this species will be judged as”extinct.”
There have been 5 large-scale life extinctions in the history of the earth. Among them, the Permian-Triassic extinction event occurred 252 million years ago is the largest extinction event in geological history. Scientists have always believed that it was related to the Siberian dark basalt. , But a paper published in the journal Nature-Earth Science on October 19 said that through the analysis of sedimentary rocks at the bottom of the Alps, the evidence points to a chill!
Earth:Originated from the primordial solar nebula 4.6 billion years ago. Since the birth of this planet billions of years ago, countless creatures have survived, and many creatures have become extinct here, such as the defenseless Stella Sea Cow:The Dodo has been extinct since 1768:The North American passenger pigeon has been extinct since 1681. Dinosaurs 150 million years old on the earth:appeared about 2.
Since the Big Bang, the universe has been 15 billion years old, and the earth on which we live today is only 4.6 billion years old, less than one third of the universe! It is only 600 million years since the emergence of the earth creatures, but in the 600 million years when the earth creatures occupied less than one third of the earth, the creatures have suffered 5 species extinctions!