Question

what are natural resources

Answer 1

materials or substance occurs in nature which can not be exploited for economic gain
in other words natural resources are developed without help of human beings.
ex:waterfall is a natural resource developed without help of human beings

Answer 2

Natural resources are those resources that comes from the nature .
For e.g. - fuel ,petroleum etc. And we cannot make them .
Many natural resources like -air ,sunlight and water are in plenty but at other hand resources like -petroleum are very small in quantity .