Which factor could be a contributor to birth defects?
Group of answer choices

All are correct

Mother drinks or uses drugs

Mother is overweight

Mother is underweight

Are needed by the body in large amounts in order to maintain good health

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.

Which two levels of the spine that can undergo flexion and extension?