Fraction of states that must agree to change the
constitution is a blank?

answer; researchers typically cannot control people's sexual behaviors as would be necessary in an experiment;

prime rate/ credit history apex

this is a pretty broad question and can be a pretty lengthy answer. since 1900, women have gained a lot more rights and have become active in the workforce. with women being in the workforce, men play a larger role in family life. many family tasks are shared between men and women, whereas, women used to be the sole family caretakers.

that should get you started at least.

good question. i'll be looking into that. (this is a joke sir)