Which theory arguments that life on earth came from outer space?

  • A

    Theory of panspermia

  • B

    Cosmozoic theory

  • C

    Spore theory

  • D

    All of these

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Formation of which complex molecules was noticed by Urey and Miller when they subjected substances like $N{H_3},C{H_4},{H_2}O$ etc. to electric discharge

Definitions / Explanation : Abiogenesis & Biogenesis
 

The concept of chemical evolution is based on

Chemical theory of origin of life was given by

An experiment to prove that organic compounds were the basis of life, was performed by