根据美国1787年宪法,众议员名额按照各州人口比例分配,各州人口数“按自由人总数加上所有其他人口的五分之三予以确定”。这规定违背了《独立宣言》中提倡的
A single-parent child should have the right to enjoy normal parental love from both just as his other peers, which some psychologists see as _____to their emotional well-being.
种群内个体的空间分布以随机分布最为常见.( )