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heredity and evolution
Asked by rohit_rangarajan | 03 Nov, 2009, 07:18: PM
answered-by-expert Expert Answer

It is speculated that at the time of formation of life, the atmosphere was composed of methane, ammonia, water vapour and hydrogen. In presence of high temperature and persistent lightning, a chance combination of these substances in due course of time must have given rise to the first form of life.

Answered by | 08 Nov, 2009, 07:42: AM

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CBSE 10 - Biology
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