Evolution logoSubject: Biology    Exam: NEET-UG

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Important Points

Life originated in the form of cyanobacteria about 3600 million years ago

Energy was available in the form of heat cosmic (U. V.) rays and lightening on the primitive earth
The presence of abundant free oxygen on the earth today's earth life originates from preexisting life
The first photosynthetic acids must have been formed by some non-enzymatic processes
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