It can become airborne from natural processes, such as soil decomposition and volcanic eruption, and fall back to earth in dust, rain or snow.
(It; can become; airborne from natural processes, such as soil decomposition and volcanic eruption) (It; fall; back to earth; in dust, rain or snow)
It It
can become fall
airborne from natural processes, such as soil decomposition and volcanic eruption
back to earth in dust, rain or snow