The various factors which make the earth suitable for life to evolve and survive are
►The earth has all the essential elements like carbon (in the form of CO2), hydrogen (H2), nitrogen (N2) and oxygen (O2) which act as building blocks for the origin of life.
►The earth has enough oxygen gas in its atmosphere for the survival of living beings through breathing.
►The earth has a protective blanket of ozone layer high up in its atmosphere to save life from harmful ultraviolet radiations coming from the sun.
►The earth has a lot of water in the form of lakes, rivers and oceans for the growth and survival of life.
►The earth is neither too hot nor too cold. It has the right temperature range for carrying out the life-sustaining chemical reactions.
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