 
<translate> Tasirin kwalban yana faruwa ne lokacin da yawan jama'a ya ragu sosai ba zato ba tsammani. Dabbobi da tsire-tsire sun wanzu a matsayin jama'a. Tasirin toshewa yana faruwa lokacin da ƙungiyar dabbobi ko tsire-tsire ta zama ƙarami. Amsar ita ce: (A). <eng> Bottleneck effect occurs when a population suddenly gets much smaller. Animals and plants exist as populations. Bottleneck effect occurs when an animal or plant group gets much smaller. The answer: (A). 