Cytosine
(C) - both;
Thymine (T) – DNA;
Uracil (U) - RNA.
Adenine
(A) - Both
Guanine
(G) - Both
These are the letters that we use to represent the nitrogenous base pairs that make up and thus define a nucleotide
I believe the answer should be solar
The vegetation of the tundra is composed of shrubs, grasses, mosses, lichens. Tree vegetation is very rare because of low temperature and short growing season.