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The first cellular form of life arose about how many million years ago?

A2000
B3000
C1000
D4000
Answer & Solution
Correct answer: A. 2000
1. Chemical evolution came first, then cells. 2. The first cellular form of life did not possibly originate till about 2000 million years ago. 3. These were probably single cells in a water environment. _Source: syllabus Biology, Ch 7 'Evolution'_
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