What kind of planetary habitable life read the answer

There must be a safe cosmic environment, and we can transform or adapt to other conditions, and if there is no safe cosmic environment, the existence of other conditions is useless.

In fact, the Earth is definitely the most suitable planet for life among the planets in the habitable zone. Moreover, compared to other planets, the environment and conditions of the earth are suitable for the development of life. So next, I will count them one by one, what are the advantages of life survival.

The first is that the air on Earth is difficult to replace by other planets. Although there is air on Mars, the air on Mars is far less oxygen than the air on Earth, and the oxygen content is actually a high-quality condition suitable for the survival of life. After all, oxygen can not only provide the energy needed for life, but also a very important existence that can transport blood in the blood vessels of life and maintain the activity of cells in the living body.

Therefore, other planets do not have so much oxygen, and even some planets do not have oxygen conditions, so the earth is very advantageous. <>

And water is also a very important advantage, because other planets don't even have liquid water, but water is actually a very important link, whether it is human beings, animals or plants, in fact, they need liquid water to be able to maintain the signs of life, after all, humans also need water to be able to make their body functions run well, and plants also need water as their own nutrients, animals also need water, and even others. What we can't imagine is that life is actually inseparable from water resources, so such abundant water resources on the earth have created one of its advantages. <>

And the earth has the most suitable temperature. The survival of life itself requires a very suitable temperature, and with so much life on the earth, it can be seen that the current temperature of the earth is the most suitable for the survival of all kinds of life, but the other planets are either too hot or too cold. In fact, they are all very extreme, so the earth also has an advantageous survival condition in terms of temperature.

Suitable temperature, oxygen, water, sunlight that is neither hot nor cold, the ultraviolet magnetic field of the earth itself. Be in a suitable position in the solar system. For example, Mercury and Venus are too close, and Mars is too far away.

The reason why there is life in the earth is because the earth has these conditions that can be suitable for survival, first of all, it has the oxygen needed by living beings, followed by water, and sunlight, because sunlight is the fundamental energy of biological survival, so a planet with life must have water, sunlight and energy, which are necessary substances.

First of all, there is an atmosphere that makes the surface of the planet free from ultraviolet interference to protect life on our planet, secondly, there must be sufficient water sources to keep life activities undisturbed, and finally, there must be amino acids and other nutrients to provide the necessary conditions for life activities.

Habitable planets are actually planets that are suitable for human habitation.

When humans came up with the name habitable planet, Earth became the first habitable planet to be discovered by humans.

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 6,371 kilometers, and the circumference of the equator is about 40,076 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 to exist, and it is home to millions of living beings, including humans.

We only know that there is life on Earth, but is there life similar to Earth on other planets with similar conditions to Earth? Scientists believe that life is possible on all celestial bodies in the universe that have the conditions for the birth of life.

Copernicus's theory tells us that our Earth is nothing more than a typical planet in a typical planetary system. So the first step in finding extraterrestrial life is to find "habitable planets" similar to Earth. Scientists use the Kepler telescope to find "habitable planets" that are about the size of our Earth world and orbit around stars about the same size as the Earth, so that the temperature changes on the planets will be similar to those on the Earth.

Not long ago, NASA has confirmed the first planet outside the solar system in the "habitable zone" with the help of the Kepler telescope. The planet, named Kepler-22b, is about twice the size of the Earth and has a surface temperature of about 70 degrees Fahrenheit (equivalent to 21), which is the most suitable for living organisms. 7-0-1 milk level, in addition, there may be liquid water on this planet.

It is currently the closest planet to Earth in terms of size and orbit, and it also orbits a sun-like star every 290 days like the Earth orbits the sun. You may ask, is "Kepler-22b" a "habitable planet"? If a "habitable planet" is found, how far are we from finding another "Shiya Sphere" in the universe? "Yes.

What is the root cause of the presence of liquid water on Earth compared to Mars, Venus?

13.Contextually, fill in a sentence that summarizes the content of the paragraph at the underline of the paragraph. (3 points).

14.Read the paragraph and talk about the expressive effect of the words in the following sentences. (3 points).

Scientists are not sure whether Kepler-22b is composed mainly of rocks or gas or liquid, so it is not certain that it is a terrestrial planet. 15.One of the following statements is incorrect: ( ) 3 points).

a.The first line-drawing sentence uses a series of numbers and comparisons to illustrate that Kepler-22b may be a "habitable planet".

b.The related words that can be filled in at the horizontal line of the paragraph are, in order, "not only......And".

c.The order in which articles - paragraphs are described is a logical order from primary to secondary.

d.If Kepler-22b is similar in nature to Earth, the liquid theory will definitely exist there for a long time.

16.The series of questions in the first paragraph enlighten us. (3 points).

13 Example 1: It must be a planet near the habitable zone.

Example 2: It must be at a moderate distance from the star.

Comments: 3 points for this question. If you have the right meaning, you can score points.

14 "Present" means "present, present", and the temporal limitation indicates that scientists have not been sure that "Kepler 22b" is a terrestrial planet until now, and whether it will be determined in the future is still unknown, reflecting the accuracy of the explanatory language. [**: 21st Century Education Network].

Comments: There are 3 points in this question. 1 point is given for explaining the meaning of "present", and 2 points are given for combining the role of sentence analysis.

15 d Comments: 3 points for this question.

16 The mysteries of the universe are endless, and scientific exploration is never-ending.

Comments: There are 3 points in this question. 1 point for writing about the infinite mysteries of the universe; Write that scientific exploration is endless, and you get 2 points.