Humans are able to produce 20 different amino acids, which have side chains with differing properties. How does the variation in amino acids' side chains affect a cell?

In a cladogram' when does a group of organisms branch off

During the process of two rails or sides break apart and attract new nucleotide bases to form a new and complete strand.

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures