Answer:
B
Explanation:
I think B is the very best answer. She's happier because she realize that she's providing a service for people who are bed redden.
She must be talking, because the people in the center tell her things.
She shares what she learns from them with others, including her own family members. So everyone benefits.
Answer:
An open system is defined as a “system in exchange of matter with its environment, presenting import and export, building-up and breaking-down of its material components.” Closed systems, on the other hand, are held to be isolated from their environment.
Explanation:
I believe the answer is opium
