The monomer units of the carbohydrates vary in their total numbers extensively. Moreover, positions of the carbonyl groups along with the orientation of the hydroxyl groups also vary in the carbohydrates' monomers. The presence of any modification is also variable.
On the other hand, the nucleic acids have only 4 monomeric units. The linkages between the nucleic acid residues have less geometry than the glycosidic linkages.
The period during which the presence of stromatolites decline is the Proterzoic period. Stromatolites are widely distributed sedimentary structures consisting of laminated carbonate or silicate rocks, produced over geologic time by the trapping, binding, or the precipitating of sediment by groups of microorganisms, primarily cyanobacteria.
It causes cultural change by bringing in diffrent cultures and traditions into a superior culture making it into a melting pot
ONE OF THE OLDEST ARGUMENTS IN THE HISTORY OF PSYCHOLOGY IN THE NATURE VERSES NURTURE DEBATE EACH OTHER THESE SIDES HAVE GOOD POINTS THAT IT IS REALLY HARD TO DECIDE WHETHER A PERSON'S DEVELOPMENT IS PREDISPOSED IN HIS/HER DNA, OR A MAJORITY OF ITS INFLUENCED BY THIS LIFE EXPERIENCES AND HIS/HER ENVIRONMENT .........
A is the answer
.....................................................
