And in the earth are (diverse) tracts side by side, and (in them there are) gardens of vines and (different kinds of) cornfields and date-palms; growing in clusters (many together from one root) and (others) growing separately from different roots. They are all watered with the same water, yet We make some of them excel others in (respect of) bearing fruit and (their) tastes. Behold! in all this, there are signs (to recognize their Lord) for a people who use their understanding.