what are the basis of classification of resource?
Resources are divided into Natural Resources, Human made resources and Human Resources.
Natural resources-like coal and petrol, wood and water are directly drawn from nature.
Natural Resources can further be divided as following:
Human Made Resources- Sometimes natural resources are made useful only with human intervention, e.g. the extraction of iron from Iron ore.
Human Resources-Humans are also resources who make possible the use of natural resources.