compound consisting of a nucleoside linked to a phosphate group. Nucleotides form the basic structural unit of nucleic acids such as DNA.
I believe that the answer is D. If something has evolved, it can not interbreed with its old species. I think this is right!
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are the leading causes of death worldwide
Anatomy of a Wave
A wave is described by its wavelength (or the distance between two sequential crests or two sequential troughs), the wave period (or the time it takes a wave to travel the wavelength), and the wave frequency (the number of wave crests that pass by a fixed location in a given amount of time
