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a sac-like structure in plant cells that contains the cell sap. It supports the cell and helps maintain its shape.
the flooding of land, such as the flooding that happens when dams are constructed.
(also called renal failure) the condition in which the kidneys are no longer able to function...
the second biological classification group (taxon) that is divided into phyla (for animals) or...
middle body tissue layer that forms the muscular, circulatory and excretory systems.
moulds that generally infect the leaves of many plants, including crop plants, such as wheat and...