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It's getting harder and harder to get a girlfriend.
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The current state of the earth's natural resources is as follows:
Earth resources usually refer to natural resources, including: georesources, mineral resources, marine resources, resources, forest resources, physical resources and meteorological resources. Due to over-exploitation and profitability, by 2050, the class will require additional planets to provide enough resources for sustainable use.
The land area of the earth is 100 million square meters, of which 100 million hectares of fertile cultivated land, 100 million hectares of pasture land, and 100 million hectares of forest and forest land. The degradation of the land caused by such activities is about 2 billion hm2 globally, equivalent to 15% of the Earth's total land area.
Mineral resources make 90 percent of the world's energy fuels, i.e., coal, oil and natural resources, and more than 80 percent of industrial raw materials belong to and belong to mineral resources, which are a few depletion resources.
Marine resources, oceans and marine areas are heavily polluted. Increasing pressure on land and marine resources and the continuous exploitation of marine sediment, resulting in the degradation of the oceans and coasts; Eutrophication has occurred in both the ocean and coastal zones due to excessive nitrogen emissions into the ocean.
Resources cover more than 70 percent of the earth's surface, totaling 1.5 billion deniers. However, it is only for the light, and in fact, the amount of light that can be used for profit only accounts for the total amount of light in the world. According to the statistics of relevant United Nations organizations, there is a shortage of 1.2 billion in the world.
It has gone beyond the scope of stupid key living resources and has become an important strategic resource.
According to the 2005 Global Forest Resources Assessment Report, the global forest volume in 2005 was 100 million hm2, accounting for 110 m3 hm2 of land area (excluding inland areas).
According to the statistics of the "Tree of Life" item of the National Science Foundation of the United States, there may have been 5 million 100 million species on the earth before. However, few 50,000 species go extinct each year, with an average of 140 species going extinct every day.
The air pollution of the mistress resources in the mold file is serious, and the climatic changes are obvious. Since then, the quantification of oxidized carbon emissions caused by fuel combustion, magnitude changes, mud production, and material combustion has led to the destruction of the earth's ozone layer, the formation of the greenhouse effect, and global warming.
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There are various classifications of environmental pollution:
According to environmental elements: air pollution, water pollution, soil pollution.
According to human activities, it is divided into industrial environmental pollution, urban environmental pollution, and agricultural environmental pollution.
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Forest resources. The Earth's forests were once 7.6 billion hectares, but now they are less than 36 hectares. Over-deforestation and deforestation are reducing the world's forest area by almost 1 per cent every year.
Freshwater resources. The world's water consumption is now 10 times higher than it was 100 years ago. About 60 per cent of the world is water-scarce, and about 1.5 billion people in 80 countries face water shortages, of which about 300 million people in 26 countries live entirely in water scarcity.
Mineral resources. Mineral resources are limited, and now the rate of mining is accelerating, so that some minerals are in short supply and even facing depletion.
At that time, humanity will remain in this desolate land forever. (unless people develop new energy sources).
Is it possible to move to other planets when the earth's resources are depleted?
It's almost impossible, first of all, Mercury is too hot, the moon has no atmosphere (of course, you can dig a hole in the ground where there is water near the poles), Mars is more similar to Earth, but scientists are still desperately looking for water on it, and it is too far away, the composition of the atmosphere is not good, and the transportation cost is very problematic. The winds howl on the surface of Jupiter every day, and those small moons can also be considered. If you are a little farther away from the sun, it will be too cold.
Anyway, with the existing space transportation technology of mankind, it will not be possible to go anywhere. The nearest planet outside the solar system, Proxima Centauri, is also four light-years away, and the average spacecraft would take 400,000 years!
Earth is one of the eight planets in the solar system, the third planet in order from near to far, and it is also the terrestrial planet with the largest diameter, mass and density in the solar system, 100 million kilometers away from the sun. The Earth rotates from west to east while revolving around the Sun. It is 4,04.6 billion years old,[1] and it has a natural satellite, the Moon, which forms a celestial system, the Earth-Moon System.
It originated from the primordial solar nebula 4.6 billion years ago.
The radius of the Earth's equator is kilometers, the polar radius is kilometers, the average radius is about 6371 kilometers, and the circumference of the equator is about 40076 kilometers. The surface area of the earth is 100 million square kilometers, of which 71% is oceans and 29% is land.
The interior of the earth has a core, mantle, and crust structure, and the outside of the earth has a hydrosphere, atmosphere, and magnetic field. The Earth is the only celestial body in the universe where life is known, and it is home to millions of creatures, including humans.
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No. Because scientists have proven that within the 3 billion kilometers centered on the Earth, there is no second planet suitable for human survival.
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At present, the nearest planet that humans have found that may be suitable for human life is more than 20 light-years away from the earth, do you think it is possible to reach it? Even if humans could invent a spaceship that would be close to the speed of light and reach that planet, we would not know what the real environment would be.
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Scientists estimate that the known oil resources on the earth are enough for us to use for 60 years, and the unknown is enough for 10 years, and there are two solutions to resource depletion, or to invent new energy, for example, now that human beings have realized the importance of new energy development, they have begun to use electricity to drive cars, and so on, of course, if the speed of technological development is fast enough, we can explore another planet suitable for human survival in our lifetime, and then we will immigrate together, but the cost is too high, I think that the 2012 show requires a very expensive spaceship ticket, hehe But it is only a matter of time before humans move to other planets
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The earth has existed for more than 4 billion years, and talents have only survived for two or three million years. If the earth's resources are really depleted, it will be n years later, and it is estimated that you and I will not be able to see it. What we can do is to protect the environment we live in as much as possible and control the over-exploitation of resources.
Leave the matter of the future to be settled by future generations.
There are various classifications of environmental pollution: >>>More
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What are the benefits of developing and utilizing natural resources: 1. The total amount of abundant China's land area is 9.6 million square kilometers, accounting for the land area of the Asian continent and the land area of the world, and it is one of the countries with a vast land area in the world, ranking third in the world. Hydropower resources rank first in the world, and there is great potential for the development of marine resources. >>>More
Earth is the third planet in the solar system from the inside to the outside, and it is also the terrestrial planet with the highest diameter, mass, and density in the solar system. It is also often referred to as the world. The Earth is 4,446 billion years old, and a natural satellite, the Moon, orbits the Earth in a 30-day cycle, while the Earth rotates in a cycle of nearly 24 hours and orbits the Sun in a one-year cycle.