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the seepage of acidic, contaminated water from disused mines and mine dumps.
modified phloem parenchyma cells that help translocate food substances in the plant.
small fluid-filled sacs that store, transport, or digest cellular products and waste.
when the body makes its own antibodies when deliberately exposed to a dead or weakened pathogen...
membrane-bound compartments inside chloroplasts and cyanobacteria. They are the site of the...
single-celled brown algae found in fresh water and seawater. They have hard, shell-like cell...