vocab ch.5

• Aquifer

  A rock which contains water that is abstracted by humans
• Cnidarians

  A taxon of animals that includes corals and jellyfish
• Hydrology

  The study and understanding of the movement, distribution and properties of water in the environment.
• Leachate

  Drainage water that carries other substances, either in solution or as suspended solids
• Photic layer

  The water layer into which light can penetrate
• Shellfish

  All the aquatic animals that are caught or grown to be eaten that have shells or an exoskeleton e.g crustaceans
• Turbidity

  A measure of the level of suspended solids in water which affects the ability of light to penetrate the water
• Hydrosphere

  All the water on earth in solid, liquid and gaseous form in a variety of reservoirs e.g ice caps, living organisms and the atmosphere