What percentage of adults over age 65 years in developed countries report symptoms of arthritis?

Actions that avoid environmental stressors are called

a. corrective adaptations. b. mediated adaptations. c. preventive adaptations. d. congruence adaptations.

Adolescents from developed countries who work more than 10 hours a week are more likely to ____

a. experience psychological problems b. be happy c. have several romantic relationships d. have very high grades