All of the forces, positive or negative, acting to keep an individual in a relationship are known as

Harold has normal color vision. He is a ______

a. dichromat c. diplomat b. monochromat d. trichromat

One kind of sexual disorder, ________, is probably one of the most embarrassing of disorders for adolescent males and is characterized by the inability to achieve or maintain an erection

Fill in the blank with the appropriate word.