-
The ocean covers 71 of the Earth's surface, and if all the water in the ocean were evenly spread on the Earth's surface, a 2,700-meter-thick hydrosphere would form on the Earth's surface. So some people say that the name of the earth is wrong, and it should be called "water ball". From the origin of life on earth to the formation of human society, from a primitive society with low productivity to a modern society with advanced science and technology, man and water have formed an indissoluble bond.
Water is not only the basic condition for human survival, but also an indispensable material resource for social production. Without water, there would be no human society today. Water, air, and food are the three major elements of human life and health.
50 60 of the weight of the human body is made up of water, and the water in the body of a child is up to 80 . It can be said that there is no life without water. However, the earth's freshwater resources account for only 3% of the earth's total water resources, and of these 3 freshwater, only can be directly consumed.
Therefore, water is a precious resource for human beings and a fountain of life. Since ancient times, people have lived in pursuit of water and grass. About 5 billion years ago, on the primitive earth, the sky was like fire, and lightning thundered; Lava rolls on the ground and volcanoes erupt.
This natural phenomenon has become the "birth" of the origin of life. The huge heat energy prompts the primitive earth to move and change violently, giving birth to life. Due to the continuous heat dissipation of the primordial earth, the scorching surface gradually cooled down, and the water that originally "ran" from the earth to the sky condensed into raindrops, and then fell to the ground, which lasted for many hundreds of millions of years, forming the primordial ocean.
During the rainfall, hydrogen, carbon dioxide, ammonia and methane, etc., are partially carried into the pristine ocean; When the rain washes over the earth, many minerals and organic matter collect in the ocean. The vast desert primeval ocean, where all things meet, the weather is myriad, and a large amount of organic matter is continuously produced, and the ocean has become the cradle of life. Organism - amino acids.
At the same time, organic compounds can also be obtained by irradiation with ultraviolet light. In 1965, Chinese scientists were the first in the world to artificially synthesize insulin, a protein with vitality, which was a big step in China's journey to explore the origin of life.
-
Water is the source of all things, and there will be no water unless there is no land!! But there will be no fresh water!! If humans destroy the environment again!
If the greenhouse effect is more serious, it will cause all the ice in the north and south poles to melt, and there will be no land!! Humans are just beginning to adapt to life on the water!! Ha ha!!
Then it will be the era of the "Great Passage".
-
Albert Einstein said, "The last drop of water in the world is the tear of man," so the last drop of water is when the last tear of man is gone.
-
Look at the earth's strength, three mountains, six waters, one field, there are four seasons of evergreen plants throughout the year, thousands of varieties. There are more types of animals and there are advanced humans. If there were no people, there would be no living things, because living things must have the conditions of water. There is really no water, and it will go to the moon.
It's a dead ball. Water is the blood of human beings and the source of life. What would the world be like if there was no water on Earth?
If there is no water on the earth, we can no longer enjoy the vast sea of clouds in the Yellow Mountain, the northern silver outfit outside the Guan, the endless Yangtze River and the Yellow River will be cut off, the dotted lakes will dry up, and the vast ocean will disappear.
Water is the blood of human beings and the source of life. What would the world be like if there was no water on Earth? If there is no water on the earth, we can no longer enjoy the vast sea of clouds in the Yellow Mountain, the northern silver outfit outside the Guan, the endless Yangtze River and the Yellow River will be cut off, the dotted lakes will dry up, and the vast ocean will disappear.
Everything is exhausted, and the current civilization is lost, and the earth will return to the state it was hundreds of millions of years ago, giving birth to life anew. Water is the source of life, without water, all life on the earth will disappear, whether it is people or animals, plants or microorganisms will all disappear, and when all life on the earth disappears, the sky will not become very blue, because the sky turns blue because there is a thick layer of oxygen. Oxygen production is inseparable from plants.
And the earth will become the same as Mars, loess, not a little lifeless, not as blue as before. It looks like the moon is cratered, and there are deep ravines formed by the sea.
Due to gravity issues, the original trench ridge will suddenly lose pressure and magma.
gushing out and filling the low-lying areas. There will also be big ** on land. Fires are frequent, thunder and lightning are common. Of course it won't rain. There is also thick smoke billowing in the atmosphere, and plants and animals will die of dehydration in a short time. Mass extinction.
After that, due to the presence of hydrogen in the earth's crust.
Water vapor will appear due to combustion.
After enrichment, liquid water will also appear, but the amount will be small.
-
If there is no water on the earth, everything will be extinct, because the life of human beings, animals and plants cannot live without water, and the earth will be desolate, with no big trees, no grass, and no red flowers.
-
It will become a very scary appearance, because water is the source of life, and if there is no water on the earth, many places will dry up, and it will be difficult for humans to survive.
-
If there is no water on the earth, animals and plants will not be able to survive, and the earth will become a desolate planet.
-
If there is no water on the earth, then the world will become very arid, and all animals and humans will not survive, and there will be no plants on the earth.
-
Scoop out the water in another container, suck it out with a sponge palladium water in a cup, siphon away from the water to pump it out, dry it, put a stick in it and freeze it into ice, take it out with ice, straw it, drink it, etc. Water is a colorless and odorless transparent liquid at room temperature and pressure, which is known as the source of human life and is an important substance for maintaining life. Water is one of the most common substances on Earth.
71% of the Earth's surface is covered by water. It is an important resource for the survival of all life, including inorganic chemistry and human beings, and it is also the most important component of living organisms. Pure water is a very weak electrolyte with very weak electrical conductivity.
Water in daily life has more anions and cations due to the dissolution of other electrolytes, so it has more obvious conductivity.
Related information
Some scientists believe that the water on Earth is the masterpiece of the solar wind. The scientist who first made this idea was Toverley. He believes that the solar wind reaches the upper layer of the earth's atmosphere, bringing a large number of atomic nuclei such as hydrogen, carbon, and oxygen nuclei, which combine with electrons in the earth's atmosphere to form hydrogenozons, carbon atoms, oxygen atoms, etc.
After turning water molecules through different chemical reactions, it is estimated that in the upper layers of the Earth's atmosphere, almost tons of this "cosmic water" are produced every year. This water falls to the earth in the form of rain, snow. What's more, the ratio of the hydrogen front Zheng Sen to the tritium content in the Earth's water is 6700 1, which is also very close to the hydrogen tritium ratio on the surface of the sun.
Thus, Teverly argues that the silver acres can fully illustrate that the earth's water comes from the solar wind.
Go to bed at 10 o'clock at night at the latest but more than 11 o'clock, the best time for beauty sleep is from 10 o'clock in the evening to 2 o'clock in the middle of the night, this time period of the body's various functions begin to carry out corresponding detoxification activities, night is our most vigorous metabolism time, we must use this time to achieve the effect of sleep beauty.
Step by step, it is not good to wean suddenly, so that the child can not accept. If the child is more than 4 months old, you can gradually add complementary food, reduce the number of breastfeeding, if the original is 8 times a day of breastfeeding, it can be reduced to 7 times a week, add a complementary food, if the child adapts well, the next week can be reduced to 5 times of breastfeeding, and gradually wean off breast milk. It is best mixed with more nutritious milk powder, such as Shengyuan Yili Duomez.
Around 6 to 7 months of age, babies may be able to start crawling soon after they are able to sit firmly on their own without support. Next, your baby will look up and look around. The muscles in his arms, legs, and back were strong enough to keep him from falling when he supported himself with his hands and knees. >>>More
Medium-rare is the best! The egg yolk is hot and not solidified, and there is no fishy smell in the mouth! So it's the best to eat! >>>More
It's appropriate from now on. It's no longer or too early to learn, now you can start memorizing words first, but just sign up for a class. >>>More