Which kind of exercise helps your heart work more efficiently? a Strength training
b Aerobic exercise
c Anaerobic exercise
d flexibility training

Social health is a. to have satisfying relationships. b. to have a support network of friends and family. c. to make positive contributions to your community, country, and world. d. all of the above

The lungs are a. divided into seven lobes b.divided into nine lobes c.separated by the mediastinum d. connected by the mediastinum

The youngest babies change position once every on average. a. 5 minutes b. half hour c. minute d. 10 minutes