Earth is home to more than 20 million kinds of organisms, and all have DNA made up of only four types of nucleotides. The bodies of each kind of organism grow and function according to instructions in their DNA. Such variety is possible because each organism's DNA molecules:
A.
can quickly change into different shapes.
B.
contain two strands of nucleotide bases.
C.
contain a unique sequence of nucleotide bases.
D.
combine easily with other molecules.

help MEEEEEEE please