In the world of birds, usually males are more colorful or ornamented than females. The explanation for this is sexual selection (traits that help one gender to be successful). This phenomenon, allows to males to compete with other males. For example, more colorful males might seem more dangerously. On the other hand, ornaments and colors of male birds can attract the attention of females.
Answer:
C. nerves
Explanation:
Nerves are what connect your brain to the rest of your body.
Carbon number 1 is linked to the nitrogenous base (adenine, cytosine, guanine, or thymine).
Carbon number 3 is linked to the next nucleotide by a phosphate group.
Carbon number 5 is linked to the previous nucleotide by a phosphate group.
(The "next" or "previous" nucleotide depend on the direction your seeing it. I considered the 5'->3' direction.)
All the other carbons do not link to any other DNA component.