2nd 6 weeks test vocabulary Tools A B streams with many bars and islands braided stream gas to a liquid condensation water found in layers of rock or sediment groundwater elements in water hydrogen and oxygen stream with curves in its channel meandering transfers water from the atmosphere to Earth's surface precipitation lake used to supply water for human consumption reservoir pumping of water from one place to another for watering crops irrigation agency responsilbe for enforcing water pollution laws in U.S. EPA top surface of the zone of saturation water table layer of rock or sediment that can yield usable groundwater aquifer careful use and protection of water water conservation