Answer:
True.
Explanation:
The correct answer is true because biofeedback can help control health problems such as the ones listed below
-Treats or helps to control:
-Heart rate
-Anxiety
-Muscle tension
-Pain
-Brain waves
-Blood pressure
-Skin temperature
The answer for this question would be all of the above
I believe you are asking about the "triangle" we were tought a simple triangle. Cells at the bottom because there are the most of them, tissues next, organ next, and organ system at the top. So I believe the answer you are looking for is Organ System.
