How the earth is constantly changing, how the earth is changing

The Earth's rotation speed suddenly increases.

Earth is the first three planets in the solar system from the inside out. And its two neighboring sister planets are more than the search hall to serve up, and the earth is lucky. It is not far from the Sun and happens to be in the habitable zone of the solar system.

This keeps the average temperature of the Earth at around 15.

This temperature is just right for the water to remain in a liquid state. As a result, the Earth has wonders that no other planet in the solar system has. Water forms rivers and turbulent oceans on the surface of the earth.

Because of this, another miracle in the solar system and even the universe has appeared on Earth - life.

Scientists** believe that if the problem of global warming is not effectively mitigated, the world's largest ice sheet, the East Antarctic ice sheet in Antarctica, will completely melt in 10,000 years. This melting ice water will cause global sea levels to rise by 3.4 meters. At that time, large swathes of land will be submerged by the sea.

In 300,000 years, the star WR104, which is 8,000 light-years away from Earth, could explode as a supernova. It is a star with 27 solar masses and a surface temperature of up to 60,000. Its eruption could bring a catastrophe to life on Earth.

When the WR104 supernova explodes, a high-energy gamma-ray burst is ejected from its axis of rotation. Scientists' observations suggest that the angle of the axis of rotation of WR104 and the Earth may be about 30°.

Therefore, there is a certain probability that the gamma-ray bursts it emits will hit the Earth. Once the Earth is hit, the tragedy of the Ordovician mass extinction of 100 million years ago will be repeated.

The changes in the earth are as follows:

Global climate change, caused by the burning of fossil fuels and the emission of large amounts of greenhouse gases such as carbon dioxide, has pushed the earth's environment to a critical moment. In recent years, extreme weather phenomena in the context of various global climate changes have been frequently staged around the world, such as heavy snowfall, hurricanes, lightning strikes, floods, droughts, and ......

Global climate change is also causing glacier collapse and melting, rising sea levels, reduced food production, species extinction and ......

The world's population continued to grow after the Black Death in the 15th century, with the fastest rate of growth in the world population (higher than in the 50s of the 20th century). According to the world population**, the world's population will continue to grow until 2050.

Cope

Before the irreversible catastrophe of global warming, only by saving energy and reducing emissions, abandoning fossil fuels, switching to clean renewable energy, saving energy in production and life, improving energy efficiency, reducing greenhouse gases, protecting forests, and slowing down the greenhouse effect, can we effectively curb the global climate change trend and restore the earth to a sustainable living space.

Switch to energy-saving lamps and recycled paper ......The minutiae of daily life are also closely related to the overall situation of mitigating global warming. Choosing a "green" lifestyle, you can also contribute to energy conservation and emission reduction just by raising your hands.

Over the years, the geology has changed and the land has been divided into seven continents. Asia is vast and mountainous; Europe faces the sea on three sides and has a pleasant environment; Africa has a hot climate and is rich in mineral deposits; In the Western Hemisphere, vast tropical rainforests in South and North America are lush green; Huge freshwater lakes are rippling with blue waters. The islands of the Atlantic Ocean are like flower petals, walking in the boundless Pacific Ocean; Antarctica is like a fast crystal white jade, shimmering with a holy cold light.

Rolling plains, hills, snow-capped peaks and steep mountains, vast roof oceans, and magical deserts, all of these things on earth are beautiful but lifeless. Without the foil of living things, no matter how beautiful things in the world are, they still can't show their beauty and vitality.

After that, after many more years, the earth began to change again, and living things appeared. Microbial plants, fish, mammals and birds, evolving and metamorphosing again and again, life forms from the lower to the higher gradually appearing all kinds of life forms coexisting in a strange posture on the blue planet, they multiply, sharing the sun, air and water equally, as well as the even, vast time. This is also another picture of tranquility, harmony, and ordinary and boring.

The stars are moving, and time is passing. Humanity has finally appeared in this season of desolation, when it was still a time when the hair was drinking blood, and the earth was still covered by the cold and ignorant fear. It was a miracle when humans discovered the fire.

Lightning-fast'The light of the fire illuminated the chaotic land, and from then on hope was ignited, and society moved forward again. Since then, the earth has been turned upside down. The Great Wall of China bears witness to the tenacity and strength of a nation, and the pyramids of Egypt shine with the light of human wisdom.

Civilizations such as the statue of Zeus, the lighthouse of Alexandria, and the giant stone sculptures of Rhodes are scattered on the earth, adding dazzling brilliance to the earth. The perfect transformation of the earth has since become a splendid and wonderful picture.

1. Now the scientific community generally believes that 5 billion years ago, the solar system was formed, the dust around the sun gathered to form the earth's core, heavy metals were deposited deep underground, and then slowly formed due to the high temperature and high pressure underground, the earth's magma was formed, and the surface magma solidified into the earth's crust.

2. 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, 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.

For more than 100 million years, the earth has been changing day after day.

2. About 2 million years ago, when human beings were born on the earth, this lovely planet prepared a beautiful and comfortable living environment for human beings: vast land, vast oceans, dense forests, green mountains, green grasslands, fresh air, and clear rivers.

Rivers, enchanting lakes and beautiful nature!

3. The earth is a crystalline sphere with blue and white lines intertwined with each other, surrounded by a thin layer of aqua-blue "gauze". The earth, the mother of mankind, the cradle of life, is so beautiful and magnificent, so amiable.

4. As the mother of mankind and the cradle of life, the earth is so amiable, so beautiful and magnificent, intoxicating and infinitely nostalgic.

5. According to the astronauts who came back from the universe, when they were traveling in space, they looked at the earth from afar, and what caught their eyes was a glass-like (because of water) sphere with blue and white lines and scars, surrounded by a thin layer of blue "gauze" (atmosphere), which was crystal clear and transparent, flashing with colorful halos.

6. The eagle strikes the sky, the fish soars to the shallow bottom, the trees are grandiose, and the white destruction calls for the loss of flowers, these vigorous life activities are the vivid poems, exciting songs and beauty of creation! Oh, beautiful earth, lovely earth, my dear mother!

7. In the vast universe where the starry chain is bright, there is a blue star that gives birth to life, and she is the earth.

Environmental degradation, resource scarcity, global warming, desertification, species extinction.

1. Environmental deterioration.

There are many reasons for environmental degradation, mainly due to the intensification of ecological destruction around the world. The internal allocation mechanism of each element of the natural environment is unbalanced, and the environmental quality deteriorates. Generally speaking, the deterioration of the ecological environment in developing countries is more serious than that in developed countries.

2. Lack of resources.

Resources are not inexhaustible, they run out, and they will never survive without protection. People will also go extinct. Therefore, the conservation of natural resources depends on the conscious action of the first and everyone.

We should actively participate and do our best to save every drop of water, a single electricity, a piece of paper, etc.

3. Global warming.

Global warming is a phenomenon that is related to nature. This is due to the continuous accumulation of the greenhouse effect, which leads to an imbalance in energy absorption and emissions in the earth's atmospheric system, which leads to an imbalance in the energy accumulation of the earth's atmospheric system, leading to rising temperatures and global warming.

4. Land desertification.

Land degradation in arid, semi-arid and arid sub-humid lands due to a variety of factors such as climate change and human activities. In a narrow sense, desertification refers to the emergence of non-desertified areas in fragile ecosystems where the balance of land desertification is upset due to excessive economic activities. The process of environmental change similar to desert landscapes is discussed.

5. Species extinction.

In the world, biological species are disappearing at an unprecedented rate. Some of them are extinct. By 1681, the dodo had disappeared from the face of the earth.

From 1600 to 1800, 25 species of birds and mammals became extinct, and from 1800 to 1950 there were 78 species of birds and mammals became extinct.

I'll help you sort it out.

1.First of all, environmental degradation. (light pollution, water, air pollution, etc.) 2Reduced resources. (Water Resources, Fossil Energy, etc.).

3.Air pollution, thinning, changes in the proportion of atmospheric composition, increase in carbon dioxide, greenhouse effect.

4.Desertification of the land is serious, and soil fertility is declining.

5.Glaciers are decreasing and sea levels are rising.

6.Inclement weather is on the rise.

7.**、Tsunami causes the movement of plates。

8.Biodiversity is decreasing.

9.Vegetation cover decreases.

Global climate extremes, increasing global disasters, lack of resources, population expansion, serious environmental pollution, and over-exploitation of resources.

1. The water is polluted.

2. The population is about to **.

3. The land is polluted.

4. Serious soil erosion.

5. The air is polluted.

6. Trees are cut down 149 square kilometers every year.

There are more people, more cars, and more houses. There is less water, fewer trees, less mines.