What would the surface of the earth look like if it were not covered by seawater?

Without the cover of seawater, the surface of the earth may be even more uneven. Because there are a lot of canyons in the deep sea at the bottom of the sea, they are originally much lower than the sea level, and then there are continents above the sea level, and there are mountains and hills that are much higher than the continents. In this way, the surface of the earth will become even more uneven than it is now.

Imagine what the surface of the moon looks like. Then it is possible that the earth does not have seawater. A lifeless, completely devoid of lifeless beauty.

There will be no concept of oceans on the earth, all of them will be terrestrial. Without water, life would not be able to be nurtured, and the earth would lose its role as a special existence in the solar system and even the Milky Way. Become a very ordinary planet, just like in the universe, billions of billions of planets.

The surface of the earth will be completely dry earth. The topography of the ground will not be as beautiful as it once was. The surface of the earth will become full of holes, and ravines and ravines will be everywhere.

The earth will no longer be divided into states, such as Antarctica, Asia, North America, etc. Because the surface of the earth will be connected as a whole. At that time, the earth will be a huge landmass.

At the beginning, the earth's surface, which is not covered by seawater, must be very potholed。However, with the accumulation of wind and sand over time, as well as the erosion of the landform, the earth may be smoother after tens of thousands of years than before。Because the canyons that are particularly low will be filled in slightly, and the mountains that are particularly high will become a little lower under the influence of the wind.

It is precisely because of the existence of seawater that the earth has become a special existence in the universe and has completed the cycle of life systems on the earth. Therefore, seawater is still very important, without the cover of seawater, then many organisms on the earth will also become extinct. Thinking of this, I feel even more that we should protect the earth, not to harm this beautiful planet excessively, but also to protect us human beings.

If there is no seawater on the surface of the earth, then the terrain will be yellow-green, with forests, cities, and deserts side by side!

If there is no sea cover, the earth will probably be like other planets in the solar system, the air is thin, the surface is uneven, some places are extremely low altitude, and some places are extremely high, and the air is thin and unsuitable for human habitation.

If the earth's surface is not covered by seawater, then the surface terrain will become a desert, just like the Loess Plateau in China, with yellow sand and very little greenery.

The ocean is a general term for "sea" and "ocean". Three-quarters of the Earth's area is covered by oceans. The total area is about 355,255,500 square kilometers.

These saltwater waters, which occupy a large area of the earth, are generally called "oceans", and the waters on the edge of the continents are called "seas".The total area of the ocean is to the power of 8 square kilometers. The average depth of the surface area is -3729 m, and the deepest point is the Mariana Trench in the western Pacific Ocean (-11034 m).

The four main oceans of the earth are the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, and the Arctic Ocean, most of which are bounded by land and submarine topography. Today, only 5% of the seabed has been explored, and 95% of the seabed is unknown.

The oceans cover more than 70% of the Earth's surface and are the main drivers of weather and climate. A small fluctuation in ocean temperature can cause drastic changes in weather and climate around the world.

If the ocean current is abnormal, it will cause the global atmospheric circulation to be abnormal, which will affect the climate. Such as: El Niño.

Under normal conditions on a global scale, under the influence of ocean currents and trade winds in the eastern Pacific Ocean, the sea water in the eastern part of the Pacific Ocean flows northwest with the warm current of the south equator, and there is upwelling compensation in the eastern part of the ocean, which is manifested by low water temperature in the eastern sea area and high water temperature in the west.

The sea does not have its own independent tides and currents. The sea can be divided into marginal seas, inland seas, and the Mediterranean Sea. The marginal sea is not only the edge of the ocean, but also the frontier of physical knowledge near the continent. This type of sea is widely connected to the ocean, usually separated from the ocean by a group of islands.

China's East China Sea and South China Sea are the marginal seas of the Pacific Ocean. Inland seas, i.e., seas located within continents, such as the Baltic Sea in Europe, etc.

About 71% of the Earth's surface is covered by oceans. This includes the Pacific Ocean, the Atlantic Ocean, the Indian Ocean, the surroundings of South Antarctica and other oceans and coastlines. The remaining 29% is land, with land, islands and glaciers.

The ocean is the most extensive ecosystem on the earth, and plays an important role in the earth's climate regulation, material spike cycle, and biological wheel diversity.

Seventy-one percent of the Earth's surface is covered by water. The surface area of the earth is 100 million square kilometers, of which 71% is ocean, and 29% is land.

The hydrosphere includes oceans, rivers, lakes, swamps, glaciers, and groundwater, and is a continuous but irregular layer. Looking at the Earth from an altitude tens of thousands of kilometers away from the Earth, you can see the white clouds formed by water vapor in the Earth's atmosphere and the blue ocean that covers most of the Earth, making the Earth a blue star.

About 70% of the Earth's surface is covered by water.

The Earth's water resources, broadly speaking, refer to the total amount of water in the hydrosphere. It includes surface water and groundwater that are controlled by humans and can be directly used for irrigation, power generation, water supply, shipping, aquaculture, etc., as well as rivers, lakes, wells, springs, tidals, harbors and aquaculture waters.

Water resources are indispensable and important natural resources for the development of the national economy. In many parts of the world, the demand for water is already greater than the amount of water that can be used for cherry blossoms, and many regions are on the verge of imbalances in the use of water resources.

70% of the Earth's surface is covered by water, but 97% of it is ocean, which is too salty for terrestrial life. Of the remaining 3 freshwater, more than 2 are concentrated in the north and south poles of the earth, and the remaining less than 1 is mainly distributed in rivers, lakes, underground, the atmosphere and living organisms.

Protecting water resources is everyone's responsibility

The total water reserves of various forms of water on the earth, such as ocean water, lake water, river water, groundwater, atmospheric water and biological water, are about cubic meters. The earth's surface is covered with water. Among them, ocean water accounts for about the total water storage site in the world.

However, although the total water storage on the earth is very large, there is very little fresh water, which only accounts for about the leakage of the world's total water storage, and most of it is still distributed in the ice, snow and permafrost layers of the poles and mountains, which is difficult to use, and the available freshwater sites are less than 1 of the total water storage.

The ocean is not only a treasure trove of water resources, but also rich in chemical resources. Seawater contains more than 80 chemical elements, and with the depletion of terrestrial resources, the development of marine resources is becoming increasingly important.

Nearly 71% of the Earth's surface is covered by water.

Earth (English name: earth; Latin: Terra) is the third planet from the Sun and the only celestial body known to mankind to give birth to and support life. The surface of the Earth is roughly a land mass made up of continents and islands.

The remainder is covered by water, mostly by oceans, bays, and other saltwater bodies, but also by lakes, glaciers, rivers, and other freshwater bodies, most covered by its glaciers, which together make up the hydrosphere. Most of the Earth's polar regions are covered in ice.

The Earth's outer layer is divided into several rigid tectonic plates that migrate to the surface over millions of years while its interior remains active, with a solid iron core, a liquid outer core that generates the Earth's magnetic field, and a convective mantle that drives plate tectonics, among other things. The Earth's atmosphere is mainly made up of nitrogen and oxygen.

The tropics receive more solar energy than the polar regions and redistribute it through atmospheric and oceanic circulation. Greenhouse gases also play an important role in regulating the surface temperature. The climate of a region is determined not only by latitude, but also by factors such as altitude and proximity to the region and the ocean.

Severe weather such as tropical cyclones, thunderstorms, and heat waves often occur in a wide area and have a great impact on life.

Earth's gravitational pull:

The gravitational pull of the Earth Agitation Globe interacts with other objects in space, especially the Moon, which is the only natural satellite of the Earth. It takes about a few days for the Earth to revolve around the Sun.

The Earth's axis of rotation is tilted relative to its orbital plane, thus producing seasons on Earth. The gravitational interaction between the Earth and the Moon causes tides that stabilize the direction of the Earth on its axis and gradually slow down its rotation. The earth is the home of human beings living together, and there is only one earth for human beings.

** of water on Earth.

According to estimates, 71 of the Earth's surface is covered by water, and the total amount of water is about 100 million cubic kilometers, which exists in the oceans.

One is a meteorite that falls on the earth, and the other is a water molecule formed by protons from the sun. However, American scientists have recently come up with an impressive new theory: Earth's water comes from comets made of ice in space.

Scientists have discovered that water on the Earth's surface is lost into space. This is because the water vapor molecules in the atmosphere are broken down into hydrogen atoms and oxygen atoms under the action of the sun's ultraviolet rays. When the hydrogen atoms reach the 80,100-kilometre gas-thin thermosphere, they move faster than the cosmic speed and disappear out of the atmosphere into space.

Scientists estimate that the amount of water that flies off the Earth's surface is roughly equal to the amount of water that enters the Earth's surface. But geoscientists have found that in 20,000 years, the water level of the world's oceans has risen by about 100 meters. As a result, the increasing amount of water on the earth's surface has become a mystery.

Until recently, scientists from a research team at the University of Iowa in the United States found that there were always small dark spots on disk-shaped images of the Earth from thousands of ultraviolet radiation images sent back by artificial satellites. Each small black spot is present for about 2 3 minutes and covers an area of about 2000 square kilometers. After analysis, the spots were caused by small comets made up of some invisible ice blocks that rushed into the Earth's atmosphere, rupturing and melting into water vapor.

Scientists estimate that about 20 small ice-like comets with an average diameter of 10 meters enter the Earth's atmosphere every minute, each releasing about 100 tons of water.

The Earth has been formed about 3.8 billion years ago, and these small comets are constantly supplying water that allows the Earth to form the water level it is today.