Answer:
Adrenaline
Explanation:
Adrenaline, also called norepinephrine, is a hormone produced mainly by the adrenal glands (medulla). Its main goal is to prepare the body to <em>“fight or flight”</em> response, it means that under <u>stressful situations </u>(in this case, fear), it triggers heart rate increase, airway expansion (to benefit gas exchange), blood pressure increase, mydriasis, etc.
Adrenaline release is stimulated by the sympathetic nervous system.
Answer:
Observable trait, and blue eyes!
Explanation:
A good way to remember is phenotype -> physical trait.
The main idea is usually in the first sentence of the essay or in the last paragraph. I believe that C is the correct answer. I hope this helped and feel free to thanks me, rate me 5/5 and make me brainliest!!!