Biology 3rd Edition by Peter Russell, Paul Hertz, Beverly McMillan

تمرين 3

Evidence for the appearance of the following is separated by the greatest amount of time:
A)nonlife: prokaryotes.
B)photosynthetic prokaryotes: first eukaryotes.
C)nonphotosynthetic bacteria: photosynthetic bacteria.
D)unicellular eukaryotes: multicellular eukaryotes.
E)first prokaryotic cells: first eukaryotic cells.