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.
[SAFC] Altruism is likely driven by empathyâour tendency to âresonateâ with the emotional and physical states of other people. [Wired]. When you understand and feel anotherâs feelings for yourself, you have empathy. Itâs often spoken of as a character attribute that people have to varying degrees. For example, if hearing a tragic news story makes you feel almost as if the story concerns you personally, you have the ability to empathize.