the theory of plate tectonics states that the crust of earth is divided into plates which are slowly moving
Explanation:
A. the distribution of sand on an ocean floor
The liver is the main site
The genetic code is the set of rules by which information encoded in genetic material (DNA or RNA sequences) is translated into proteins (amino acid sequences) by living cells. Those genes that code for proteins are composed of tri-nucleotide units called codons, each coding for a single amino acid.
The 3rd one I think not really sure
