nk so low as to be biological ly unv iab Ie.\rThat is to say, the character i st i cs possessed by the original popu I at i on\rwould be whittIed down to those characters possessed by only the few\rremaining individuals. The result of such a biological calamity is\rinbreeding, less abi I ity to adapt to new conditions, and less individual\rvar iety. Three words can sum it up: protracted biological extinction.\rThe future "hopes“ of these animals are further discussed in the final\rchapter.\rMany species of whaIes wiI I not breed unless .\rA. they are in the same group for a long term\rB. they are isolated from other species\rC. they are in the company of many other whales\rD. there are enough genes available
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