Circulatory system.....circulates blood (a vital delivery system of oxygen) throughout the whole body when tissues need it the most and with a constant supply.
because it is a new virus that us humans have not experienced and we are still learning about it
Answer:
RNA because it is single-stranded and contains the sugar ribose.
Explanation:
Answer:
Proteins
Explanation:
Proteins are made up of many repeating units (monomers) of amino acids that are joined by peptide bonds.
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