Which of the following correctly describes how two systems of the human body interact to carry out life processes? A. The circulatory system takes fluids into the body, and the excretory system disposes of excess fluids.
B. The excretory system takes fluids into the body, and the digestive system disposes of excess fluids.
C. The respiratory system takes oxygen into the body, and the circulatory system distributes it.
D. The digestive system takes oxygen into the body, and the respiratory system distributes it.

In a study of a weight loss program, 40 subjects lost a mean of 3.0 lb after 12 months. does the weight loss program have practical significance? a. yes, because the weight loss program worked and the subjects lost a mean of 3.0 lb. b. no, because the mean weight loss of 3.0 lb after one year does not seem to justify the program. c. no, because the sample of 40 subjects was too small to determine if the program was useful. d. yes, because the mean weight loss of 3.0 lb after one year does seems to justify the program.

Why is it often difficult to get funding for local parks? a. state governments do not like to grant permits for local parks. b. federal regulations prohibit most fund raising. c. there is often a small tax base. d. federal funding cuts have all but stopped local construction of parks.

20. identify the main term from the following statement: gastrostomy with vagotomy