In this extract there has been an attempt to create atmosphere through the use of weather.
Evaluate how successful the author has been in accomplishing this.
Support your views with detailed reference to the text.
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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.