I need a picture in order for me to answer your question
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The delivery of oxygen and nutrients to the tissues of the body is accomplished through BLOOD circulation.
a proton located in the atom is the nucleus
Proteins are macromolecules that are made up of the subunits that are called amino acids, there are 20 fundamental kinds of amino acids present. These varying combinations of them make different proteins needed for numerous functions.
Among the northern Andean countries strongly involved in the illegal coca and drug trade, Columbia is now the predominant coca producer, so the answer would be option A.
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