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1
The first stage of life involved
A)the formation of membrane enclosed polymers.
B)the formation of nucleotides and amino acids.
C)the formation of carbon compounds.
D)the formation of RNA.
E)the formation of DNA.
2
The process by which genetic changes occur from one generation to the next is best described as
A)commensalism.
B)evolution.
C)chemical selection.
D)natural selection.
E)genetic drift.





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