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simple epithelium with elongated, cells that lines the stomach, small intestine, urethra, vas deferens (sperm duct), prostate gland and part of the uterus.
substances that have a harmful effect on the environment and also on human health.
a medical condition in which the body is unable to use its own insulin effectively.
waste water from sinks, washing machines, dishwashers, showers and baths, which can be used for...