Sometimes wind does this, at other times water does this.

Sometimes insects do this, at other times birds do this.

Sometimes humans also do this.

This thing keeps life moving.

This is best delivery system that is running from years and years ago.

What is 'this'?

  • $\begingroup$ "Sometimes Human's also do this .." so the human does it or is it inside a human? $\endgroup$ – lois6b Aug 8 '16 at 9:54
  • $\begingroup$ Are the upper case letters in Wind and Human a hint or just typo's? $\endgroup$ – Meta45 Aug 8 '16 at 9:59

I think its:



And Water, wind, insects , birds and humans are medium of pollination (transferring pollen grains)

  • $\begingroup$ well human does it.. could be. but "This is best delivery system" ? $\endgroup$ – lois6b Aug 8 '16 at 10:18

Is the Answer:

Sound (or) Music.


The Wind, Water, Insects, Birds, Human may makes sound and music.


Music can keeps life moving.


Music is the best delivery system for many years.

  • $\begingroup$ nice ,but I am thinking something else. $\endgroup$ – Amruth A Aug 8 '16 at 10:05
  • $\begingroup$ Got it... Thinking Something else.. $\endgroup$ – Ram Visagan Aug 8 '16 at 10:07

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