The earth is a beautiful ecological planet. Standing in space, we can easily see that it is very different from other planets. If you compare the eight planets together, you will find that the earth is like a gem, exuding blue brilliance, while the other planets are very dim and have no brilliance. This may be the characteristic of the planet of life.
For the earth to become a planet of life, it must have all the conditions for the birth of life. Among these many conditions, water is an important factor. For life on earth, water is the source of life. The earliest simple life was born in the ocean 4 billion years ago. After continuous evolution, some marine life Only after the land, the later terrestrial life and the birth of mankind.
Through the research of various organisms, it is found that the main substance in the organism is actually water. For example, 70% of the substance in the human body is water. We often say that women are made of water, but men are also made of women. Most of the substances in various organisms are water, which shows how important water is to life on earth.
The earth can form a beautiful ecosystem in 4 billion years, and it is also closely related to water. We all know that 70% of the earth’s surface area is ocean, and land only accounts for 30%. How did the earth’s water come from in the early days? There is no conclusion yet. Some scientists believe that the early comets hit the earth and brought water, and some scientists believe that the earth itself evolved water.
In any case, 70% of the ocean area gave birth to the beautiful planet of life. So someone asked the question: If 70% of the earth’s surface was land, what would the world be like? Can human beings survive?
The contradiction between the ocean area and the land area will undoubtedly have a very serious impact on the earth’s ecology. Although the earth still had 30% of the ocean area at that time, it could still maintain the basic living conditions for life, but after the ocean area was greatly reduced, the environment would change. It is very dry and less rainy.
We all know that due to the existence of the ocean, the earth’s environment is still relatively humid on the whole, and a humid ecological environment is very important for life and human survival. However, due to the reduction of the ocean area to 30% and the expansion of the land to 70%, the earth’s temperature will change a lot at this time, and overall the temperature will become much higher than it is now.
I believe that many friends know the concept of specific heat capacity, which refers to the amount of heat that a substance can hold. Heat is transferred between two objects, which is called heat transfer. There are some objects that can absorb a lot of heat, and their surface will not easily become hot. Just like iron and soil, iron will quickly become hot before the same temperature, but soil is different. This is because iron can absorb less heat than soil, so iron tends to become hot.
Water is a substance that absorbs heat very easily, so in coastal areas, the temperature difference between day and night is relatively small, and because sea water can absorb a lot of heat, the earth’s temperature can remain stable and can be better regulated. An important function of the ocean is to regulate the temperature of the atmosphere, but if the area of the ocean is exchanged with that of the land, the temperature regulation function of the earth’s atmosphere will be greatly reduced.
At this time, the temperature of the earth will rise a lot, and drought and less rain will become a common thing. Without rain, the temperature of the terrestrial atmosphere will be very high, and forests and vegetation will be prone to fires, which will worsen the ecological environment of the earth. Many lives may not survive and become extinct because of this.
If you are a careful friend, you will find that the water content in the earth’s organism is very close to the area of water on the earth’s surface, which is about 70%. Is this a coincidence? There is no absolute coincidence on the path of life evolution. It seems that this is a coincidence, but it is not.
Life has evolved from 4 billion years to the present. In this process, water has played an important role. Water participates in the evolution of life, and water is a very important part of the ecological environment, so life needs to form a perfect combination with the ecology of the earth under the law of survival of the fittest in nature, so life is evolving In the process of evolution, 70% of the material in the living body is water.
Only by forming a more perfect fit with the ecology of nature can life be able to survive better, otherwise it will be eliminated by nature. But now the ocean area has changed from 70% to 30%. Can you say that life can adapt? I am afraid it will be difficult to adapt. At this time, it will lead to a large loss of water in the body, and ultimately endanger life.
So, we can imagine that when 70% of the earth’s surface becomes land, it will be a biological catastrophe. A large number of surface life will become extinct as a result, even intelligent life like humans, without the help of scientific and technological power, may be completely extinct and disappear.
Even if we have the help of science and technology, human beings will face many difficulties in the survival of the earth. The current greenhouse effect makes us feel more and more difficult to adapt. When the land becomes 70%, the greenhouse effect may be more difficult than it is now. More than ten times more serious. In this high temperature environment, although the earth will not become a desert planet like Mars, the ecological environment will also change drastically. The desert area will become larger and larger, and human survival will become more and more difficult. .
Of course, this situation is a terrible result after the current earth’s ocean area was exchanged with land. But if in 4 billion years, when the earth’s ecology was formed, 30% of the oceans and 70% of the land were fixed, then the situation might be completely different.
Some people may say that if the oceans and land on the earth’s surface were replaced 4 billion years ago, life might not be born. Is this really the case? In fact, this cognition is not entirely correct. Water is the source of life. Even though the earth’s surface was only 30% of the ocean area at that time, it still has the hope of giving birth to early life.
However, since the area of the ocean is not as large as that of the land, the species evolved from the early life born in the ocean may not be as rich as it is now. As long as early life can be born in the ocean, through evolutionary evolution, there is still hope to grow into more advanced life, and eventually intelligent life will be born.
It’s just that for organisms that have evolved in this ecological environment, the material water in their bodies may not be the current ratio, but only 30%. When the proportion of water drops by more than half, the ability to withstand high temperatures will naturally increase. Life can also survive the high temperature and drought environment. If intelligent life is born, it can also adapt to the harsh environment of high temperature and drought.
Through the above analysis, we understand that the evolution of life is closely related to the ecological environment, and what kind of life will evolve from what kind of ecological environment structure. If radical changes have taken place in the ecological environment along the path of evolution, it will be difficult for life to adapt, which may lead to mass extinction.
Therefore, 70% of the earth’s oceans were formed billions of years ago. It cannot be changed easily. If the area of the oceans is greatly reduced, it will be a terrible disaster for terrestrial organisms and humans. . Therefore, we must take good care of the current earth’s ecology, especially the oceans. Only if the oceans are protected, the earth’s ecology will not undergo subversive changes, which will endanger human civilization.