(2 points) a group of college students believes that herbal tea has remarkable restorative powers. to test their theory, they make weekly visits to a local nursing home, visiting with residents, talking with them, and serving them herbal tea. after several months, many of the residents are more cheerful and healthy. (a) the lurking variable in this experiment is a. the fact that this is a local nursing home. b. herbal tea. c. visits of the college students. d. the emotional state of the residents. (b) the explanatory variable in this experiment is a. visits of the college students. b. the fact that this is a local nursing home. c. herbal tea. d. the emotional state of the residents. (c) which of the following may be correctly concluded from this study

What part of the female reproductive system produces ova

Sally is a 43-year-old mother of two who has gained 50 pounds over the past 5 years. she is 64 inches tall and weighs 180 pounds with a bmi of 30.8. her waist circumference is 37 inches. she acknowledges that she is not as physically active as she would like to be. she also notes how recent stresses in her life have affected her sleep and seem to have triggered her appetite for sweets and comfort foods. sally's father recently died from complications of type 2 diabetes, and her mother and sisters are overweight. sally says she is very motivated to "not get diabetes" and is disturbed that her recent physical exam revealed mildly elevated blood pressure, glucose, and cholesterol levels. 1. sally stated that recent stresses in her life are affecting her sleep and seemed to have triggered her appetite for sweets and comfort foods. which of the following statements would be best to explain why her lack of sleep has increased her appetite? a. lack of sleep decreases ghrelin levels. b. levels of neuropeptide y, a brain chemical that causes carbohydrate cravings, are high and may contribute to her sleep problems. c. the satiety hormone leptin increases with lack of sleep. d. lack of sleep increases uncoupling protein. e. lack of sleep increases levels of ghrelin which stimulates appetite and decreases levels of leptin which decreases appetite.

Which is the term used for a drug that increases the activity of the nervous system