Some resources are not renewable - such as mineral deposits, petrochemicals and the like. Whether you use them quickly or whether you use them slowly, they don't come back. For this very reason it is hard to define overuse, since any use at all will have the same effect - depletion of the resource.
Adj. 1. altruistic-showing unselfish concern for the welfare of others. selfless. unselfish-disregarding your own advantages and welfare over those of others.
A truly altruistic person. âª gives and shares what belongs to them with others without asking (usually at the expense of their convenience, or at times survival). âª Identifies the one who needs their help, responds to them kindly and do their best to assist without expecting any reward in return for such assistance.