What are the building blocks of Carbohydrates A-Sugars, Starches
B-Proteins
C-Fats, Oils
D-Amino Acids

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen

Wich level of organization includes all the other levels or organizations