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Evolution

Question
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Write the composition of primitive earth’s atmosphere according to the Big Bang theory..

Solution
According to the Big Bang theory hydrogen and helium formed after the explosion as the universe expanded. Gases condensed and formed galaxies. Water vapour, methane,carbon dioxide and ammonia were released form molten mass. Hydrogen, oxygen and lighter H2 were formed when water  broken down by UV rays of the sun. Oxygen combined with ammonia and methane to form water, CO2 and other gases. Ozone layer was also formed. As the Earth cooled the water vapor feel as rain. 

Some More Questions From Evolution Chapter

Give another name for origin of life from non living matter.

Arrange the following substances in a proper sequence with regard to the formation of chemical constituents at the time of origin of life :

Sugar, methane, nucleic acid and amino acid.

What is the phenomenon called when the original drifted population becomes founders?

What are the two key concepts of Darwinian Theory of Evolution

What were the units of life according to the early Greek thinkers ?

Mention the type of nutrition in the cells originated first during the origin of life.

Which group of organisms were responsible for appearance of free oxygen in the atmosphere of the primitive earth ?

What is meant by the term fossil ?

What is the type of evolution in which the same structure developed along different directions due to adaptations to different needs ?

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