Evaporation — the sun heats water into vapour
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Condensation — vapour cools into clouds
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Precipitation — rain or snow falls
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Collection — water gathers in rivers, lakes and the sea
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Rain falls on a sloped farm and runs off bare soil, while terraces and mulch slow the water so it soaks in instead of washing the topsoil away.
Each stage leads into the next — watch how the whole process connects.