Just as the iris controls the size of the pupil, ____control the shape of the lens.?

The symptoms of sleep deprivation include all but which of the following?

a) trembling hands b) inability to concentrate c) feeling of general discomfort d) hypnic jerk

While shopping at a department store, an ambitious young saleswoman walks up to you. "Would you like to try our newest perfume? It's called Allure,

and it is guaranteed to get the attention of that special someone because it is formulated with real human pheromones!" Because you've recently had an interest in a new "special someone," what would be your best option in this situation? a. Buy the perfume as a gift for your "special someone" because wearing it will increase their interest in you. b. Buy the perfume, but only wear it during warm temperatures, since human reception of pheromones is influenced by ambient heat. c. Buy the perfume, since human beings, like other mammals, are producers and receivers of pheromones. d. Smile and politely decline, since there is no credible evidence that such products have any effect on human beings whatsoever.