<span>https://www.ptable.com/
b. Boron and Carbon
and here's a periodic table to help you
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Blood cells is the answer
The nucleotide triplet that encodes an amino acid is called a codon. Each group of three nucleotides encodes one amino acid. Since there are 64 combinations of 4 nucleotides taken three at a time and only 20 amino acids, the code is degenerate (more than one codon per amino acid, in most cases).
Ocean currents are convection
The back bone is the correct answer