The is the lowest level of life's structural hierarchy.

In which way does nicotine cause addiction? by stimulating the brain's pleasure center by increasing blood-sugar levels by decreasing dopamine levels by reducing depression and anxiety

Which of these is the best example of sexual objectification? a) a female initiates a conversation with another female. b) a male proposes marriage to a female. c) a female makes repated coments to a male about his appearence. d) a female proposes marriage to a male.

When lifting heavy loads off the ground, the majority of the weight should be lifted by which of the following? a. arms b. legs c. back d. stomach