Question

Non living things also grow like mountains and sand mounds so should growth be considered a defining property of living organisms..??

Answer 1

No,the non living things can't be defined as the property of living organism.Since they don't have any types of motion of their own compare to living things.
e.g- the sun(natural non living source ) which rises in the east and sets in the west, is comparable to many God made things like sand mounds... :)