Three of the four nitrogenous bases that make up RNA — adenine (A), cytosine (C), and guanine (G) — are also found in DNA. In RNA, however, a base called uracil (U) replaces thymine (T) as the complementary nucleotide to adenine (Figure 3). ... (Remember, DNA is almost always in a double-stranded helical form.)
Adaptions to collect and retain water - thick, non-pourous stems, not leaves, but thick lobes and the ability to store water until its needed.
The answer is C. Hyperthermia. Pneumonia, frostbite, and hypothermia are all caused by the body getting abnormally cold, while hyperthermia is the condition of having a body temperature greatly above the normal temperature. Hope this helps!