Which of these describe the primary structure of a protein? A. the sequence of the amino acid in the protein
B. The arrangements of multiple polypeptide chains
C. the folding of protein into sheets and spirals

yes it is   dangerous

explanation:

because that foot is discusting and could get you sick

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".