1) Evaporation occurs when the sun heats bodies of water. a) True b) False 2) Water vapour heats up as it rises, and forms clouds. a) True b) False 3) Precipitation can fall as a solid or a liquid. a) True b) False 4) Water from rivers flows until it reaches a sea, a riverr, a lake or an ocean. a) True b) False 5) Water from precipitation is absorbed, and it passes through impermeable rocks. a) True b) False 6) The Nalón river is a tributary of the Duero. a) True b) False

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