overpopulation

noun

1. (countable, uncountable)An excessive number of occupants (people, animals, plants, etc.) in a particular area; specifically, when the number of occupants exceeds the ability of that area to provide for them.

   “I hope for another end, though not, indeed, from any of the three remedies for over-population commonly suggested by economists. These three are, in brief—Colonization; Bringing in of waste lands; or Discouragement of Marriage.”

   “Over the whole extent of the South Seas, from one tropic to another, we find traces of a bygone state of over-population, when the resources of even a tropical soil were taxed, and even the improvident Polynesian trembled for the future.”

   “When it comes to overpopulation as the cause of wildlife loss in Africa, Prince William just won't let it go.”