The diagram shows the exchange of oxygen and carbon dioxide through a capillary wall. What two systems are represented in this diagram?

a) Endocrine and circulatory
b) Circulatory and digestive.
c) Circulatory and respiratory
d) Respiratory and endocrine,

Circulatory and respiratory.

This diagram has to do with the exchange of oxygen  and carbon dioxide, meaning it represents the circulatory system. Additionally, it also features blood cells, representing the respiratory system.

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c genetic engineering

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides