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an area of land set aside for the dumping of waste.
a process of asexual reproduction in which one cell splits into two cells
a black substance that coats the lungs of a smoker, causing cancer of the respiratory tract.
the part of the cell that controls all the activities of the cell and plays an important role in...
those species that are found only in a particular area or region and nowhere else on Earth.
an organism's ability to regulate or maintain its own body temperature.