Earth's super reservoir, how much water is there in Lake Baikal? The answer is beyond imagination
Water is the source of life. Scientists believe that the reason why the earth can give birth to life is mainly because of the abundant water resources on the earth. According to Darwin's theory of evolution, we can know that life on earth is evolved from simple organisms. Single-celled organisms evolved into multicellular organisms, multicellular organisms evolved into marine organisms, marine organisms evolved into amphibians, and amphibians evolved into terrestrial organisms. Humans evolved from terrestrial apes, and humans have evolved from the birth of Since then, I have continued to explore the mysteries of the world. After so many years of research, scientists now have a general understanding of the earth, which has a lot of water resources.
It accounts for 71% of the earth's surface, and the land area accounts for 29% of the total area. Due to the large area of the ocean, there are more types of marine life on the earth than terrestrial life, so all the water resources on the earth increase What is the total amount? Scientists have calculated that the total amount of water on the earth is about 1.386 billion cubic kilometers. If all the water resources on the earth are collected, it is equivalent to a water polo with a diameter of 1383 kilometers, which is larger than the volume of an ordinary satellite. For example, Pluto’s satellite Karong has a diameter of only 1212 kilometers. In general, the water resources on the earth are still very rich.
Although the total amount of water resources on the earth is large, most of the water resources on the earth are concentrated in the ocean, but there are not many freshwater resources on the earth. According to the calculations of scientists, the total amount of freshwater resources on the earth is about only 23 million cubic kilometers, and many of these freshwater resources are in glaciers and Antarctica. There are very few freshwater resources for human consumption. The largest freshwater lake on earth is Lake Baikal, which is 636 kilometers long. The evaluation width is about 48 kilometers, and the area is about 31,500 square kilometers. Compared with other lakes, the water volume of Lake Baikal is also among the best. Seeing this, many people may have a question. There are so many water resources on the earth, Is it the earth itself?
According to the research of scientists, we can know that the earth is a rocky planet, which means that the earth itself does not have water resources for birth, and so much water resources on the earth do not come from the earth itself, it mainly comes from Comet, why do you say that? Because there are a lot of comets in the solar system, comets are also called broom stars by humans, because comets always drag a long tail behind them during their flight, so humans call them broom stars. The long tails behind the comets are actually ice crystals.
Because the comet is in flight, the closer it is to the sun, the higher the temperature it receives. The higher the temperature, the ice on the surface of the comet begins to melt. During the flight of the comet, the ice crystals begin to fall off. At this time, we see behind the comet. There will be a long tail. The more famous comet is Halley's Comet. Scientists believe that in the early days of the solar system, the solar system was very chaotic, and scenes of comets hitting the earth often occurred. After a large number of comets hit the earth, they left water resources on the earth. After hundreds of millions of years of accumulation, the water resources on the earth became more and more. Later, the water resources on the earth became as much as they are now.
In addition, scientists also found that comets not only brought water resources to the earth, but also brought the main elements for the birth of life, such as amino acids and proteins, which are also brought by comets. In a sense, , Earth's life originated from comets. If there is no comet hitting the earth, then life may not be born on the earth. Although these are the conjectures of scientists, they also have some truth, but whether the truth is true or not, now scientists have no accurate answer In the future, with the advancement of human science and technology, we will be able to unlock the mysteries of the earth's life resources, but most scientists believe that water resources are very important, especially freshwater resources, which are very important to human beings.
Lake Baikal is the largest freshwater lake in the world. Its water storage capacity has reached 23 trillion cubic meters. Many people may not feel this number, but if we compare Lake Baikal with other lakes, everyone should know it. , There are many freshwater lakes on the earth, such as the Great Lakes in North America, which are Lake Superior, Lake Michigan, Lake Huron, Lake Erie, and Lake Ontario. The total area of these five lakes is about 245,200 square kilometers. Although the total area of these five lakes far exceeds that of Lake Baikal, their water resources are not as large as those of Lake Baikal. The total water volume of these five lakes is 22.8 trillion cubic meters, which is less than that of Lake Baikal. 800 billion cubic meters.
From the perspective of reserves, the amount of water in Lake Baikal is really amazing. Many people may have a question when they see it, how did Lake Baikal form? Scientists speculate that about 20 million years ago, the Indian plate and the Eurasian plate squeezed and collided with each other. After the collision of the two plates, a large area of land collapsed, and then a huge basin was formed. A large amount of water resources flowed into this basin, and eventually Lake Baikal was formed. However, according to this statement, then Lake Baikal should not be a freshwater lake, but a seawater lake. Why is Lake Baikal now a freshwater lake? Woolen cloth?