_________ is the term used to describe the mental and physical tension that results from the inability to cope with a situation or event

Census statistics show that 72 percent of older men live with a spouse, while only 42 percent of older women remain living with their spouses. What is one consequence of this gender difference?

a. Poverty rates decline for older Americans in part because both spouses contribute to retirement income through Social Security and pension plans. b. Poverty rates are higher for older Americans in part because of the lower economic status of widowed women. c. Older men live longer if there is a wife in the home to take care of them. d. Older men are 30 percent more likely to remarry after the loss of a spouse.

Which of the following structures is most similar in function to a filtering system in the engine of a car that moves gas from the gas tank, filters impurities out of it, and delivers it to the carburetor?

a. the amniotic fluid b. the amniotic sac c. the placenta d. the embryonic disk