During the first month of development, how many layers of cells make up the embryo? a. 1 b. 2 c. 3 d. 4

Patients in outpatient treatment centers and day treatment programs a.attend meetings at hospitals b.live at home c.stayin the clinic in the evenings and on the weekends d.live in the treatment facility

How quickly a drug enters your bloodstream also depends on

Acne is caused by a. a strict diet b. eating at night c. hormones d. dry skin select the best answer from the choices provided. a b c d