Which system is responsible for maintaining homeostasis and metabolism?

question 3 options:

integumentary

circulatory

endocrine

digestive

Who is considered the father of modern behavioralism? a fred b jung simmer pavlov

Who has least likely to be chosen as a mediator during a negotiation

Okay, so i need some i just broke up with my boyfriend and i don't know what to do. i am crying everyday, i have nightmares, and i even wake up with the fear of talking to anyone else. it's not even making my addiction any better, it's making it worse.