Tragedy and the Common Man: What is the author's purpose in writing this article? A. To explain the definition of tragedy
B. To argue that all men can understand and experience tragedy
C. To entertain with a story about tragic hero’s
D. To describe Orestes, Halmet, Madea and Macbeth as tragic hero’s

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.

Ithink the answer is