WHAT KINDS OF SUBSTANCES ARE ADRENALINE AND NOR ADRENALINE

66. - DE THI DH2014 66. - DE THI DH2014
DE THI DH2014

66. What kinds of substances are adrenaline and nor adrenaline?

A. Subatomic particles.

B. Minerals.

C. Vitamins.

D. Hormones.