Which of the following groups are directly involved in national security and are also the three top departments within the executive branch?

The correct answer is United States departments of State, Treasury and Defense.

The President's Cabinet is made up of 15 main executive departments. The top three departments ( in order to succession to the Presidency ) are The Department of State, The Department of Treasury and The Department of Defense.

The Department of State advises the Presidents and conducts international relations. It handles the relationships with foreign countries and discusses matters associated with national and foreign security and national and foreign policies.

The Department of Treasury manages government revenue. It collects all the federal taxes, prints all paper currency and supervises U.S. debts instruments and fiscal policy. It ensures the country's financial security.

The Department of Defense provides the military to protect the country. It deals directly with national security and the United Stated Arms Forces. It is the government's largest agency.

as university of miami psychologists debra lieberman and adam smith pointed out in a recent article in the journal current directions in psychological science, humans have social and psychological mechanisms to deter incest. with very few exceptions, marriages between brothers and sisters and between parents and their children are verboten in every human culture. the primary psychological anti-incest mechanism is the yuck response. even the idea of sex with their mom or dad, bro or sis is upsetting to most people. the psychologist jonathan haidt has found that nearly everyone is repelled by the prospect of brother-sister sex, even in hypothetical situations in which there is no chance of pregnancy).

the biological cost of incest

this raises an interesting question: just what’s so bad about incest? sure, having sex with your dad or your sister seems gross — but why? some anthropologists have argued that incest taboos are learned social conventions. this explanation, however, doesn’t make sense to me as it does not explain the widespread existence of anti-incest mechanisms in creatures ranging from cockroaches to chimpanzees. second, the incest taboo is about as close to a universal law as human moral rules get.

why should mechanisms to avoid incest be so widespread both in nature and across human societies? the answer is simple. the problem with having sex close with relatives is that there is an astonishingly high chance that your offspring will be born with a serious birth defect.

answer; environmental science;