- Life Sciences
waste water from sinks, washing machines, dishwashers, showers and baths, which can be used for flushing toilets or watering the garden.
an organ system that passes nutrients, gases, hormones, blood cells, etc. to and from cells in...
an area of land which is usually covered with shallow water, and which supports plants adapted...
a system of veins which carries blood from the digestive tract to the liver.