Psychology is the study of brain and how it works and responds to different things.
Contamination usually occurs when draping an extremity.
Pretty good! How about you? :D
Answer:
A nucleotide is the basic building block of nucleic acids. RNA and DNA are polymers made of long chains of nucleotides. A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base.
Either 50,70 or 50,75 because 80 and 85 are to high if you think I'm wrong you can always look it up in google
