A Riddle

Guess who I am:-

I am the sunset's pleasing tone,
I am the shipwreck's anguished moan.
I seed the rain that nurtures all,
I brew the anger of the squall.
I am the atoll's turquoise green,
I am the ice-floe's stark white sheen.

From me stems every living breath,
To me your dust comes after death.