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2.4  The water cycle



                     The water cycle



                     Water is vital for all living things. Our bodies are made up of at least 60% water.

                     Water on Earth is constantly moving. The water moves between rivers, lakes, oceans, the atmosphere
                     and the land. It is recycled over and over again in a continuous system called the water cycle. You are

                     still using the same water that the ancient Greeks and the Romans used. The Earth has been recycling
                     water for more than four billion years.












                                                                                      condensation



                     precipitation


                                                                                        transpiration








                                                                                                      evaporation







                                                                                 oceans

                             streamflow
                             water

                                          groundwater flow




















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