QUESTION: What is the problem the author talks about in the passage?

What is a mechanism by which organisms maintain homeostasis when the level of one substance influences the level of another substance or the activity of an organ.

Have you ever contributed to “social media outrage” (using your social media accounts to boost the anger about a contemporary issue by forwarding it, liking it, etc.) without stopping to think who might’ve originated the message or what the originator’s motives might’ve been? provide example.

What is the italicized part in the sentence , all of the operators are efficient.