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waste water from sinks, washing machines, dishwashers, showers and baths, which can be used for flushing toilets or watering the garden.
(also called the pith) the central part of the stem that consists of large, thin-walled...
when the body makes its own antibodies when deliberately exposed to a dead or weakened pathogen...
involuntary muscle found in the walls of blood vessels, in digestive, respiratory, urinary and...
a part of the brain that is located below the thalamus having numerous functions, such as: it...