A is something that is of use or benefit to people. [?] resources are ones that can be used again and again and won't run out. On the other hand [?] resources are those that are not produced as quickly as they are used up.

Resources can be categorised into [?] or cultural. Natural resources are ones produced by and exist without human intervention, for example rivers, sunshine, trees, etc. [?] resources are those that are made by people, for example buildings, cars, machinery, etc.

Farming is an example of the use of [?] resources, while mining is an example of the use of a [?] resource.