If you heat ice, it melts., If they don’t hurry, they miss the bus., If she doesn’t call me, I will feel worried., If people eat too much sugar, they gain weight, If he doesn’t sleep well, he feels tired., If you throw toxic waste in rivers, animals die., If we don’t save money, we won’t travel next year., If global warming increases, ice caps melt., If people don’t recycle, the environment suffers., If you don’t practice, you won’t improve your English., If we don’t protect nature, future generations will suffer., If we don’t act now, climate change will get worse., If there is a flood, people will need help., If ice caps melt completely, many coastal cities will disappear., If toxic waste is not managed properly, water pollution will be unstoppable., If governments act now, they will reduce the effects of climate change.

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