Question

Name the four gases which were present in the primitive atmosphere. Which kingdom

was the first to evolve on earth?

Answer 1

Life might have originated at firston earth through a series of combinations of chemical substances in the distant past and it all happened in water. (H2), methane (CH4). At that time there was no free oxygen. This sort ofatmosphere (with methane, ammonia and hydrogen) is stillfound on Jupiter and Saturn

Answer 2

Answer:

NH3, CH4, CO2, water vapour

Explanation:

• The four gases which are present in the primitive atmosphere were hydrogen comma Ammonia, carbon dioxide and water vapours . the first organic compound to be evolved after these four gases was methane.
• Life might have originated at first on earth through a series of combinations of chemical substances in the distant past and it all happened in water. (H2), methane (CH4). At that time there was no free oxygen. This sort of atmosphere (with methane, ammonia and hydrogen) is still found on Jupiter and Saturn
• In the proterozoic era origin of first vertebra and Kingdom algae which was the first one to be evolved on the planet Earth .

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