What percent of north american adults may be functioning below their potential due to prolonged exposure to stress?

a: 15-20%
b: 35-40%
c: 45-50%
d: 50-60%

Which action is the cerebrum responsible for? a. breathing b. coordination c. problem solving d. balance and one more question which characteristic true of both boys and girls during puberty? a. a curvier shape b. a deeper voice c. weight loss d. body hair