Factors which make the earth suitable for life to evolve and survive

The earth has all the essential elements like Carbon Dioxide, Hydrogen, Nitrogen and Oxygen which act as building blocks for the origin of life. The earth is neither too hot nor too cold. It has exactly right temperature range for carrying out the precious life sustaining chemical reactions.

Earth
Earth
The earth has a lot of water in the form of glaciers, lakes, rivers and oceans for the growth and survival of life. The earth has enough oxygen gas in its atmosphere for the survival of living beings through breathing.

The earth has a protective shield  of "Ozone" layer high up in its atmosphere to save living from extremely harmful ultraviolet (UV) radiations coming from sun.


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