The Earth has been around for billions of years, why hasn t the water been exhausted yet?

The Earth has existed for billions of years, about 4.5 billion years to be exact, but the Earth's water resources have never been exhausted, because from the perspective of the Earth as a wholeThe water resources on the earth are fixed, never changed, but in which part of the matter, now advocating the conservation of resources, the protection of the environment, the conservation of water resources, because of the purification of water problems. <>

For the earth, for nature, the water on the earth has never changed, but it used to be underground, and now it is on the human side, although the location of the water resources on the ground has changed, but the impact on nature is not devastating, because the earth has existed for so many years, human beings have existed for a very short time, and the impact on the earth has not been devastating, but it has a great impact on human beingsBecause human beings have certain standards for drinking water, drinking unclean water will make you sick, and the definition of water resources is to save water resources from the perspective of human beings. <>

There are many endless water in the sea, but people have certain requirements for water quality, whether it is laundry, cooking or drinking, they must meet the corresponding standards, so as not to make our body sick, there are many water resources, but there are not many that can really be used, most of them are salt water, and fresh water resources are limited, so people advocate saving resources and protecting the environment. And human use of water does not lead to the disappearance of water resourcesBecause so much water that people drink is eventually discharged, and humans eat so much food, and eventually humans will also do it for nature, so the impact on nature is not so great. <>

Saving water resources and protecting water resources is from the perspective of human beings, not how much impact it will have on nature, but if the water resources are polluted, people will not be able to get drinking and usable waterIt is possible for nature to continue to survive, because nature does not need water, but for human beings there is no way for man to survive.

Because the earth's water is recycled, and the earth's water resources will not disappear out of thin air, so they are not exhausted

The earth's water resources are constantly circulating, in the form of rainfall and snowfall, and more than 70% of the earth's water is water, and there are regional differences in freshwater resources, but they can still meet human needs.

Although water resources are scarce now, water resources are recycled, but we still need to conserve water.

Because most of the earth is water, and the melting of ice in the Antarctic and Arctic also produces water, but there is very little fresh water to drink, so although there is a lot of water, it cannot be wasted.

Because the freshwater resources on land can be constantly updated and replenished through the continuous circulation of water resources, but in fact, the freshwater resources on land only account for about about the total amount of water on the earth, including many glaciers, and scientists are currently studying how to use glaciers to obtain freshwater resources.

When we talk about protecting water resources every day, we mean that the earth's water has not been used up for 4.6 billion years. Water is one of the most important factors in sustaining life, and scientists always consider the presence of liquid water as an important criterion when searching for habitable planets outside the universe. So the question is, why does the Earth have only water among the planets in the universe?

Since the Earth is 4.6 billion years old, why hasn't it been short of water?

<> 2003, an astronaut aboard the International Space Station conducted a simple experiment that may have revealed the origin of the Earth. He shook what he picked up a few times to see what would happen in weightlessness. He did many experiments such as water, salt, etc.

Then they found that under the influence of microstatic electricity, the salt particles gathered in the same direction. This experiment is related to the origin of the Earth because, according to popular theories, 4.6 billion years ago, a two-kilometer-wide band of nebulous material, the cradle of stars, spanned the circumference of the current solar system.

Under the action of gravity, these substances clump together, just like salt particles colliding with each other. Instead of pulling the salt grains apart, the collision caused them to pile up. Stars are formed when enough nebula material accumulates.

This is how the Sun and the planets in our solar system were born, but because the Sun collects more nebula material, it becomes larger and more massive, capable of triggering its own nuclear fusion and forming stars. Earth's mass is too small to trigger its own nuclear fusion reactions, so it's a planet.

There are elements hydrogen and oxygen in the substance of the nebula, which make up water. But in the early days of the earth's existence, the earth's surface was very hot due to the heat generated by the impact, which made it difficult for the earth's water to remain liquid. Instead, it is vaporized into the atmosphere, and the gravitational pull of the Earth prevents it from going very far.

Some of the water hydrates with nebulous material in the form of ions and hydroxyl groups, which then enter the mineral lattice. Scientists estimate that minerals in the Earth's mantle contain large amounts of water, even more than the liquid water flowing on the Earth's surface.

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This is because the earth's water reserves are very large, which can be continuously generated, but the speed of water storage cannot keep up with the speed of human consumption, so it is necessary for people to protect the earth.

It's because water resources can be recycled now, so it can still be sustained for a while.

There is only a drop of water left, which is so good, only handsome guys and beauties will like it when they see it.

If you're talking about freshwater resources, there's very little clean water available, about about the world's water reserves.

The earth's water storage is abundant, with a total of 100 million cubic kilometers.

Although the amount of water on the earth is huge, there is very little water that can be directly used by people in production and life. Most of it is Hu Oak seawater, which is salty and bitter, undrinkable, unwaterable, and difficult to use for industry. The Earth's freshwater resources account for only a fraction of its total water, and of these few freshwater resources, more than 70% are frozen in the Antarctic and Arctic ice caps, and together with the inaccessible mountain glaciers and permafrost snow, 87% of the degraded and rapid water resources are difficult to use.

The freshwater resources that humans can really use are some of the rivers, lakes and groundwater, which account for about the total amount of water on the planet.