The meaning of the slogan-a plant a day keeps the floods away means-- we know that plants will stop the over glow of the water they will be like a barrier to stop floods.and when the trees are grown the roots will be going into the ground and these roots will create some space between the soil particles ao whenever there is a chance of floods the water will be flown into the spaces which are made by the roots of the plants will be helpful to us I this a plant a day keeps the floods away like this. Hope this helps u.
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