The answer is B.The respiratory system supplies the oxygen that the cardiovascular system transports to the different cells for the production of energy.
The Eukarya domain.
The organisms can be divided into three domains, based on the type of cell that the organism is made of:
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Bacteria domain: cells do not contain a nucleus.
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Archaea: cells don't contain a nucleus and they have a different cell wall from bacteria.</span><span>
Eukarya: </span></span>They keep their genetic material inside the nucleus. Composed by animals, protists, plants and fungi
DNA? I think I'm not 100% sure
The correct option is A.
The DNA from one specie differ from the DNA of another specie on the basis of their base ratio. The base ratio refers to the percentage of purine to pyrimidine in a DNA molecule. The base ratio is the one that is responsible for the variability that is observed in chromosomes from different species.