During the process of replication, a molecule of DNA unzips, forming two single strands what makes up each individual strand of DNA? A( paired adenine and uracil bases
B( Paired thymine and guanine bases
C( sugar groups attached to individual amino acids
D( nitrogenous bases attached to a sugar- phosphate backbone

is this a psat question, if so do not cheat try your best.

geologic time scale (for gradpoint) =)

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.