The Earth is the only planet where life exists, what are the favorable conditions

Among the nine planets in the solar system, the light blue earth is the only planet full of life, and nearly two million species of life are active in its mountains, oceans, forests, blue skies, and poles, and it is a well-deserved paradise of life. But why does life love the earth so much?

Although the academic community has not been able to give an accurate definition of life, life is a complex phenomenon with two basic characteristics: first, it is capable of self-replication; The second is to be able to metabolize. Both of these activities require energy, and in the case of animals and plants, the ultimate source of energy is the sun.

If the planet is too far away from the sun, such as Pluto, it receives very little sunlight, like the legendary underworld, where life cannot survive because it does not have enough energy; If the planet is too close to the sun, such as Venus, it receives a lot of solar light, and the temperature is above 400 degrees Celsius day and night, just like the mythical purgatory, and life is difficult to survive.

The earth is neither too close nor too far from the sun, and the light received is moderate, and plants can freely use the sun's light energy to photosynthesize and store the energy needed for life activities, when vegetarian animals eat plants, this stored energy goes to the body of vegetarian animals, and when carnivores eat vegetarian animals, the energy goes to the body of carnivores......In this way, it is the light energy of the sun that activates the life machinery of animals and plants on the earth, so that the descendants of animals and plants can flourish and live endlessly.

The right temperature on earth is necessary for life activities. The energy required for life activities is supplied through metabolism, and a supercold or overheated environment is not conducive to the normal progress of metabolism, and only at the right temperature can plants effectively carry out photosynthesis.

The earth is protected by an atmosphere, which is by no means optional for the life that inhabits it, because: the atmosphere blocks the strong ultraviolet rays from the universe, so that life on the earth is not harmed; The atmosphere blocks most of the meteorites that crash into the Earth, so that the surface of the Earth is not as cratered as the surface of the Moon; The atmosphere is like a thick quilt, so that the sunlight that hits the earth's surface will not be emitted into space, so that the temperature on the earth will not change drastically; If there is no protection of the atmosphere, there will be no wind and rain on the earth, and there will be no rivers, lakes and seas, and the earth will be a dead and desolate planet.

There is thriving life on Earth, which is not separate from being a rocky planet. The core of the earth is molten magma, and the main component of magma is iron. During the rotation of the Earth, a strong magnetic field is generated in the ferrous core.

This magnetic field envelops and protects the Earth. When a solar storm, a stream of high-velocity charged particles from the sun, hits the Earth violently, the magnetic field that surrounds the Earth keeps it out of space, protecting life on Earth.

The conditions on Earth are unique for life. However, in the vast universe, the solar system is just a part of the ocean, the sun is not the only star in the vast space, is the earth the only planet inhabited by life in the vast sea of stars?

There are actually a lot of favorable conditions.

The first is that there is an atmosphere on Earth. The second is the distance between the Earth and the Sun. And then there are the causes of the oceans, and ozone in the atmosphere, and so on.

It is closely related to the position of the Earth in the solar system, as well as the Earth's own conditions.

1. The distance between the earth and the sun is moderate, so that there are more than ten temperature conditions for the occurrence and development of life processes on the surface of the earth.

2. The earth has a constant volume and mass, and its gravitational pull can cause a large amount of gas to gather around the earth, forming an atmosphere that surrounds the earth.

3. The presence of water.

The distance between the sun and the earth is moderate, and v, m is moderate, so there is a gravitational attraction to attract the atmosphere, forming liquid water, contributing to the formation of primordial oceans, and eventually forming organisms and giving birth to life.

Surrounded by an atmosphere, the temperature changes between day and night are not too drastic.

I do not agree that Earth is the only planet where life exists.

Since there is a parallel universe, there must be life in another dimension other than the universe we are in, and it is very likely that the conditions for the existence of life in that space are completely different from those of the present universe.

First of all, there must be liquid water pulling, and the temperature and atmosphere must be suitable. There seem to be a lot of conditions...

The three major conditions for life to arise: a constant source of heat, organic matter, and liquid water, all three of which are present on Earth.

temperature, water, the right distance from the sun.

There is an atmospheric package, temperature, water.

Summary. And. There is life on Earth. We also need a safe cosmic environment: safe interplanetary space, where orbits are in the same direction, and large and small planets go their own way.

True or False: Earth is a unique planet, and what are the conditions it provides for the existence of life?

Is this a junior high school biology question?

Science questions for elementary school.

It should be wrong.

The existence of life requires sunlight, water, air, nutrients, temperature, etc.

Among them, sunlight is not provided by the earth, hahaha.

Sunlight is provided by the sun, and the sunlight in the solar system is naturally provided by the sun.

It can only be said that "the Earth is a unique planet, which provides the basic conditions for the existence of life".

Basic conditions.

What the textbook says is that it provides the necessary conditions for the existence of life, including sunlight, air, suitable temperature, food, etc.

Now I'm struggling with the question of the basic conditions and all the conditions.

The textbook says that it is a necessary condition, which is different from all the conditions, and a word that chooses to disturb the bridge question but has an absolute appearance in Changchong is questioned, and it is very likely to be wrong.

There is life on Earth, not just on Earth.

Returning the hand to ascend requires external conditions, and I think Bi Bi is right, because the earth and the atmospheric environment reduce the intensity of sunlight from the sun, so that we are not burned to death.

But sunlight is completely dependent on the earth, this is not nonsense, no solar energy.

Regarding the issue of sunlight, because the position of the earth is not far from the sun, it is not far from the sun, so the textbook says that the earth also provides sunlight.

And the ode to the cheating and. There is life on the wild earth. We also need a safe cosmic environment: a safe interplanetary space debate - orbits are in the same direction, and the large and small planets go their own way.

It's not that scientists have discovered a planet tens of thousands of light-years away that is about the same composition as the earth, but no life has been detected on it, so it doesn't have a good cosmic environment, sunlight or something.

It's so difficult to ask questions in elementary school now<>

<> I feel like junior high and high school are pretty much rolled.

It's really something to think about.

From the perspective of a college student, this question is wrong, but elementary school students, I don't know how far they have learned.

There are too many areas involved in science in primary school, and it is difficult to teach.

Are you a science teacher? Haha, how do I remember that our elementary school science teacher would take the children to do crafts and go out to the playground to play.

There should be a difference between the basic and all conditions.

It's really not easy to teach, compared to math is more involved, the math teacher can say that you can't use Lu Zao's reputation, you can't use it, you only learn it in middle and high school, ignore it, but science is a thing, you have to change it as soon as possible, be objective and realistic, and give examples to let children understand complex theories haha.

Yes, I think there's a difference.

If you have any other questions, please feel free to ask me.

Summary. Hello dear, I'm glad to answer for you, thinking about the uniqueness of life on the earth is: the uniqueness of the earth is the existence of life, and the existence of life is determined by two factors.

First, it is the cosmic environment that the earth comes from, that is, the external causes. 1. The cosmic environment of the earth is relatively safe, because the major planets in the solar system are basically in the same direction, and their orbits are basically on the same plane; 2. The light is relatively stable.

Clause. Second, it is the cause of the earth itself, which is the internal cause. 1. The distance between the earth and the sun is moderate, and the average temperature of the earth's surface is about 15 degrees Celsius, which is suitable for the survival of living materials; 2. The volume and weight of the earth are moderate, and the atmosphere can be formed; 3. The earth's gravity can form primordial water.

Thinking about the uniqueness of life on Earth, is it possible for life to exist on other planets?

Hello dear, I'm glad to serve you, I'm meeting the teacher, and I've served nearly 5,000 people!More than 8,000 hours of service!I have seen your question in the middle of the class, and now I am sorting out the answer, it will take about 5 minutes, please wait a while

Hello dear, I'm glad to answer for you, thinking about the uniqueness of life on the earth is: the uniqueness of the earth is the existence of life, and the existence of life is determined by two factors.

First, it is the cosmic environment of the earth's acre, that is, the external cause. 1. The cosmic environment of the earth is relatively safe, because the major planets in the solar system are basically in the same direction, and their orbits are basically on the same plane; 2. The light is relatively stable. Clause.

Second, the rapid burial is the cause of the earth itself, that is, the internal cause of the liquid reed. 1. The distance between the earth and the sun is moderate, and the average temperature of the earth's surface is about 15 degrees Celsius, which is suitable for the survival of living materials; 2. The volume and weight of the earth are moderate, and the atmosphere can be formed; 3. The earth's gravity can form primordial water.

There must be life on other planets, but we haven't discovered it yet.

Dear, hello, I am very happy to serve you He Hong, I hope my answer to the empty Sun case can help you, I hope you can like, you can also pay attention to yo, so that you can consult at any time, if you have other questions to consult, it is recommended to click on the main bucket chain page, consult separately Thank you, I wish you a happy life

Summary. In our original understanding, we believed that the earth could give birth to life because it had fresh water, oxygen and other conditions necessary for human survival, and human beings discovered outer space with their inherent cognition, and never found a planet exactly like the earth. Perhaps the birth of living planets in outer space will completely subvert our preconceived notions, they do not have fresh water and oxygen, but they do have life.

There may be life that is completely different from human beings, and all this is waiting for us to explore together.

In addition to the earth, there is life in the universe, and whether there is life on other planets, please use what you have learned today.

What is it used?

In our original understanding, we believed that the earth could give birth to life because it had fresh water, oxygen and other conditions necessary for human survival, and human beings discovered outer space with their inherent cognition, and never found a planet exactly like the earth. Perhaps the birth of living planets in outer space will completely subvert our preconceived notions, they do not have fresh water and oxygen, but they do have life. There may be life that is completely different from human beings, and all this is waiting for us to explore together.

You didn't reply to me, I replied as I understood it.