your question is Classify resources on the basis of the status of development into four groups. Explain the main features of each group.♥ ♥ ♥ Here is your answer:On the basis of the status of development, resources are classified into three groups, namely potential, developed and stock.(i) Potential Resources : Potential resources are those which are found in a region, but have not been utilised. For example, solar energy and wind energy, available in Rajasthan and Gujarat, have not been developed properly.(II) Developed Resources : Developed resources are those which are estimated in terms of their quantity and quality for utilisation, e.g., water, soil, forests.(iii) Stock Resources : Materials in the environment which have the potential to satisfy human needs but are not technologically accessible to human beings, e.g., USE of water as a rich source of energy.The stock can further be classified into Reserves. Reserve is a PART of stock which can be put to use in the near FUTURE with the help of EXISTING technology, e.g., water in dams, forests.