People have always tried to predict the weather. In the past, people often watched the sky for ____ of how the weather was changing A red sky at night, for example, suggested that the ____ day would be fine. Animals’ behaviour also provided information for forecasting the weather. For example, if cows were lying down it meant it was (3) ____to rain. Nowadays, however, scientists use complicated computer models to produce weather forecasts that are much more (4) ____. They can say, for example, if there is a 20% or 30% chance of rain on a particular day. They can also warn people if a storm is (5) ____. This is important for farmers and other people who work outside. It also helps ordinary people know whether they need to (6) ____an umbrella with them when they go out!

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