<span> The chemical </span>components<span> of </span>DNA<span> are arranged into groups called </span>nucleotides<span>, each composed of a phosphate group, a deoxyribose sugar molecule, and any one of the four bases.
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A collection of tissues working together is an Organ
It would eventually go extinct. If you put a shark in a fresh water pond and it can't adapt to fresh water it will die.