According to your text, currently the number of people in the world who are over fed ___ the number of people in the world who are hungry

While __________ is a biological phenomenon, __________ is psychological

a. sex; gender b. development; growth c. gender; sex d. development; maturation

Tuition rates were ____ in 2007 than they were in 1982 in both public and private colleges and universities

a. twice as high b. three times higher c. four times higher d. five times higher