The term resource generally means the things of utility for the humans. It could be both natural as well as cultural. Humans develop technologies to utilise nature favourably.
The popular use of a technology in a natural system turns it into a culture i.e. a way of life or living. As such it attains the status of cultural resource.
Resources form the backbone of the economy of a nation. Without land, water, forest, air, mineral one cannot develop agriculture and industry.
They constitute natural environment like air, water, forests and various life forms, which are essential for human survival and development.
By utilising natural resources, humans created their own world of houses, buildings, means of transport and communication, industries, etc. These are also very useful along with natural resources and these human made resources are essential for development.