D) Typically someone with anxiety will be anxious at various points causing dramatic, or not so dramatic changes in mood swings. When someone has an anxiety attack, mood swings will be extremely dramatic.
Dichotomous Key is an important tool in determining the identity of an organism and other objects in nature. Hopefully I helped :) Give me 5 stars and brainiest!!
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.
