单项选择题
A.交配B.防御C.运动D.隐蔽
A.数量波动B.遗传漂变C.资源溢出D.近交衰退
A.K1>K2/β,K2< K1/αB.K1< K2/β,K2>K1/αC.K1< K2/β,K2< K1/αD.K1>K2/β,K2>K1/α