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.
The original use of the concept of altruism is traced to Auguste Comte, a French mathematician and philosopher during the first half of the 1800s. The French word that was later translated to altruism, was an adjective that meant, of or to others, what is another's, somebody else..