the answer is nnnnnnnnnnnn=9
Demand curve shows what the current society needs with respect
to the supply required. The supply, ideally, must be greater than the demand
needed, however, unfortunately, demand is greater than supply nowadays, that is
why we have scarcity of resources.
As for differences between art and nature, it is well known that nature is original and art is only a creation by human beings. Art tries to replicate things natural but nature will always remain supreme.