Oxygen-poor blood flows out of the heart and into the lungs. Nutrients and oxygen are sent to other cells and parts of the body. The blood then returns to the heart to begin the process again. Which of the body’s systems is the above process describing? Answer choices
(A)-The skeletal system
(B)-The digestive system
(C)-The respiratory system
(D)-The circulatory system

i think the miocene epoch spans the time from 23 million to 12 million years ago.

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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explanation:

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. ph changes the ability of them he enzyme to dissolve in water.