The answer would be enzyme because vitamin D is a protein enzyme
The components of skill-related fitness are heredity, practice, and specificity. Whilst heredity is unable to be changed, it sets the baseline for practice (to improve specific skills or groups of skills) and specificity, to hone in your practice to one focus.
Excessive Dompamine levels is associated with enhanced aggression, increased impulsivity. Excessive Dopamine is also associated with patients with Schizophrenia psychosis. Dopamine is associated with pleasure addiction, influences movement, hightened attention, emotion. As a drug addict continues to abuse drugs, the brain adapts to the overwhelming surges in dopamine by producing less of of its own dopamine
Sight(photoreceptors)-Sound-Taste(chemoreceptors)-Touch(mechanorrecptors)
