Once again, declan has failed to spike the ball over the net. his volleyball team is getting annoyed with him even though he is great during the rest of the game. which of the following skills should declan work on to improve his ability to spike the ball?

a. speed
b. agility
c. balance
d. power

Agility. he needs to jump higher in order to get over the net.

Okay, biology isn't exactly my strongest subject (it never has been), but i'm pretty sure the answer is nucleotides. dna is made up of nucleotides. each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. there are four different nitrogen bases: adenine (a), thymine (t), guanine (g), and cytosine (c). a always pairs with t, and g always pairs with c.