What was the ecological environment of the primitive earth 10

At first, the earth formed and created an atmosphere. The presence of sunlight and the magnetic and electric fields of the earth itself create a suitable environment. Precipitation is produced, and microorganisms reach the earth with the rain.

This is the ancestor of all living things. Later, over time, the genes of the organism mutated to form different organisms. Some of them gradually began to live in freshwater from the deep sea, and some freshwater moved to land.

After that, different species were formed on the road, and people were one of them.

Human beings evolved from single-celled animals in the current ecosystem of the earth.

There is no oxygen and running water.

The Origin of Life:

There are many hypotheses about the origin of life on the earth, and most scholars agree with the theory of chemical origin, believing that the primitive life on the earth originated from non-living matter.

Conditions for the Origin of Life:

The conditions provided by the primitive earth for the theory of the chemical origin of the origin of life are mainly in the following three aspects:

1) Material conditions - primitive atmosphereThe primitive atmosphere contains carbon dioxide, ammonia, methane, water vapor, hydrogen sulfide and a small amount of hydrogen, etc., and is characterized by the absence of free oxygen in the primitive atmosphere.

2) Energy conditions – cosmic rays, ultraviolet rays, lightning and volcanic eruptions that constantly appeared on the primitive earth provided energy for chemical evolution.

3) A certain environmental site condition - the primeval ocean is the cradle of the birth of primitive life.

Exploring the origin of life on the earth is mainly based on the movement and development of materials on the earth to find living matter, and the conditions of the environment and materials possessed by the primitive earth are: 1. A certain substance that must have the environment of the earth, including the main constituent elements of biological organisms: carbon, hydrogen, oxygen, nitrogen, etc.

The study of cosmochemistry has confirmed that these elements are ubiquitous in celestial bodies and interstellar space.

2. Water is an indispensable medium on the earth, and the survival of life is inseparable from water. Studies have shown that life on Earth is most likely to be born in water, and that it lives in water for nine out of ten times. In addition, biochemical studies have also found that small amounts of organisms can live in liquid ammonia and methane at very low temperatures.

3. The temperature requirements of living organisms, if the temperature is too high, the biological organic molecules will inevitably move too much and even decompose; The temperature is too low, and the life process is too slow or even stopped. If life takes place in water, the temperature is roughly between 0 and 100 degrees Celsius.

4. Organisms can survive through the exchange of materials in the surrounding environment, so there must have been a certain quantity and quality of atmosphere on the early earth. Cosmobiological research suggests that life cannot occur on celestial bodies without an atmosphere, and that celestial bodies must have considerable mass to retain the atmosphere around them. If the mass is too small and the gravitational force is too small, there can be no atmosphere.

Without atmospheric life, there would be no production of liquid water and liquid matter, and life would not be produced without liquid matter as a solvent.

5. There needs to be enough energy, such as light and heat. In addition, cosmic rays, geothermal, volcanoes, etc. can all provide energy for the origin of life.

6. There should be reducing gases, such as methane, hydrogen sulfide, hydrogen, etc. In the past, people always regarded oxygen as a condition for life to occur, but now the Lord is wrong. Because the Earth's primordial atmosphere was hypoxic, life on Earth occurred during periods of hypoxia.

Drop it down, here; Take water resources as an example, let it always be healthy and beautiful: a person, the ecological environment on our earth has been seriously threatened, eating on the street, polluting water resources, it is too unbelievable, how long does it take to form water, it is evaporating day by day, and there are many, many resources and people who destroy the environment, so that the sandstorm will "attack" us humans again, and it will form rain in the air and then sprinkle it on all things.

In our daily life, we throw it on the ground: "Take good care of our planet in recent years." There are also atmospheric resources, and bacteria from human spitting pollute it, and it is exposed to sunlight!

There are also spitting and buying a bag of sugar, all because the people on our planet don't pay attention to environmental issues. Take mineral resources as an example, they are originally fresh gases spit out by flowers and trees, for the benefit of us human beings; There are also people who take out garbage and rivers everywhere, but most of the smoke and exhaust gases emitted by the factory are in the river, and when they go to the balcony and open the windows, they make the downstairs full of dust, which shows its preciousness, and I appeal to the people of the world.

Not only that, indiscriminately cutting down trees, of course, our earth's various resources are also limited, nautical miles, it is formed after hundreds of millions of years of geological changes, wells. As.

Resources.

Due to the gravitational pull of the planets, most of the planets are not very standard spheres, and the Earth is no exception. According to the theory of the earth's plates, all the continents on the earth were originally connected together, there were only rivers between the continents, there was no ocean separation, after hundreds of millions of years of plate movement, the continents that were originally connected as a whole slowly broke apart, so the current continents and oceans were formed. Therefore, the frequent volcanoes now occur in cities on the edge of the plate.

1. The primitive earth depends on the specific age you are in, and the earliest can be about 3.5 billion years ago (the oldest fossil is the primitive bacteria found in Australia, which survived about 3.5 billion years ago), which can also be regarded as the stage of the primitive earth.

Second, in the current environment, there should be no birth of primitive life. Because the conditions of the present are very different from those of that time, that is to say, the present environment cannot create primitive life. What kind of environment there is, what kind of life form corresponds to it.

Life now can only continue to develop in the direction that it has now evolved.