Question

what are the resources whose quality is known ​

Answer 1

Answer:

Actual Resource: Resources whose quantity is known and which are being used at present are called actual resources, e.g. coal and petroleum. Potential Resource: Resources whose entire quantity may not be known and which are not being used at present are called potential resources.

Answer 2

Actual Resource: Resources whose quantity is known and which are being used at present are called actual resources, e.g. coal and petroleum.