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Why would there be no life on Earth without an atmosphere?
Eventually (long after surface life had died), solar radiation would break atmospheric water into oxygen, which would react with carbon on the Earth to form carbon dioxide. The air would still be too thin to breathe. The lack of atmosphere would chill the Earth’s surface. Plants and land animals would die.
What would happen if earth had no atmosphere?
If there were no atmosphere around the earth, the temperature would get affected. In the absence of atmosphere, there would be no life, no rains, no winds, no fires and also no ozone layer that would be used as a protection layer against harmful radiations.
Why does the Earth’s atmosphere make it possible for life on Earth?
The atmosphere blocks out harmful rays from the sun. Gases in the atmosphere also hold in heat. The Earth’s average temperatures would fall below the freezing point of water without atmospheric gases to hold enough heat. The balance between blocked radiation and radiation allowed to reach the Earth makes life possible.
Why is the atmosphere necessary for human being?
The atmosphere protects Earth from harmful solar radiations and regulates heating provided by the Sun. The first function is made possible by ozone existing in the stratosphere, the second function is achieved by a mix of gases existing in the whole atmosphere called “greenhouse gases”.
What would Earth’s atmosphere be like if there was no life on this planet?
Without life, Earth might be similar to Venus. There would be no oxygen, but abundant carbon dioxide, which could create a runaway greenhouse effect, evaporating the oceans. There would also probably be sulphur and nitrogen oxides in the atmosphere, resulting in sulphuric and nitric acid rain.
Why did Earth lose its first atmosphere?
Earth’s original atmosphere was probably just hydrogen and helium, because these were the main gases in the dusty, gassy disk around the Sun from which the planets formed. Actually, they moved so fast they eventually all escaped Earth’s gravity and drifted off into space.