Hospitals are interested in ocean research because; the ocean floor is rich with oil and natural gas, oysters are a valuable source of copper, powerful anesthetics are found in marine organisms, fish are a valuable source of protein

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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