How is the cyclic movement of rain brought out in the poem? Compare it with what you have learnt in science.

As lines in the poem say’s the water rises from the 'land and the bottomless sea' to reach the sky. Water rises untouched from the sea in form of water vapors and then form cloud and then descend back on earth to wash the dryness and hence comes back to origin. This cyclic movement of rain brought in the poem with contrast of science.