Answer:
Oxygen and Carbon dioxide
The answer is B) hope this helped you
Answer: idk if this is what you want but there are currently about 7.7 billion people on earth rn
I’ve gone through this before and it only lasted about 1-3 days
HANS SELYE was the one who defined stress in this way.
Hans Selye is an endocrinologist and a famous stress researcher. He was the first scientist to write about the general adaptation syndrome which he used to explain his stress model. His model put it forward that an event which threaten the well being of a living organism leads to three stage bodily response which are alarm, resistance and exhaustion stage.
