Answer:
stems from the integration of several brain pathways
I think it means Heart/Lungs.
Cardio = Heart
Respiratory= Lungs
The main difference is literally the amount of SPF. The more SPF the more protected from the sun and sunburn you are. Also skin cancer! And wrinkly
Skin.
A stressor is an event/situation that causes a strain on your body/mind.
A eustress is a stress but it's determined to be a good form of stress.
The fight/flight response is a physiological reaction that our body reacts to when put in a difficult situation.