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The principle of common descent states that every organism on the earth descended from a common ancestor. It is believed that prokaryotes were the first species to accumulate the earth and gave rise to eukaryotic species.
It also reflects how a particular group of organisms is similar because they arrived from a common ancestor in the near past. This principle depicts how numerous types of species are formed from a common ancestor.
An organ is a body structure composed of tissues that have related functions. The human body has levels of organization. <span>The cell is the basic structural and functional unit of a living organism which communicates with different and similar cells in order to work together and carry out all physiological processes. <span>Cells with similar structures are grouped together in a tissue to perform a shared function. A group of tissues forms an organ that together with other organs make organ system. The integrated activity of all the organ systems makes the whole organism.</span></span>
Enzyme responsible for removing acetyl groups<span>histone deacetylase</span>
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Explanation:
Paper companies, they are made out of trees, they make cardboard, wood, paper