If you heat water to 100°C, , it boils., Plants die, if they don't get enough water., If you mix red and blue,, you get purple, Ice melts, if you heat it., If I'm tired,, I go to bed early., Cats purr, if they are happy., If it rains,, the grass gets wet., if you mix orange and blue, , you get brown., f public transport is efficient,, people stop using their cars.

Zero conditional

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