The first non-cellular form of life could have originated about $. . . . .$ years ago.
$3 \;million$
$2\; million$
$3\; billion$
$2\; billion$
They would have been giant molecules ($RNA, DNA$, Polysaccharides, etc.,)
All of the following conditions were present on early earth, except
Definitions / Explanation : Evolution & Chemical evolution
After about how many years of formation of earth, life appeared on this planet?
Definitions / Explanation : Theory of spontaneous generation / Abiogenesis & Proteinoids
Write an explanatory note on origin of life.
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