What controls anti-aging?
A computer air chemical messengers ice an electric stove Electrical energy water Chemical energy
A B C D E F G H
Growth hormone is in many ways an anti-aging hormone.
chemical messengers control anti-aging
What controls anti-aging? (A) A computer (B) air (C) chemical messengers (D) ice (E) an electric stove (F) Electrical energy (G) water (H) Chemical energy