I believe it would be Mitochondria
Generalized anxiety tends to initially arise during the mid-teens through the mid-20s.
<span>Anxiety disorders are the most common mental illness in the U.S., affecting 40 million adults in the United States age 18 and older. </span>Generalized anxiety disorder tends to occur with other anxiety disorders and with depression. Because the comorbidity is so high, researchers believe that many of the factors involved in predicting anxiety disorders, in general, are particularly important for understanding Generalized anxiety disorder.
Answer:
trees because they change,birds they change
Explanation:
Answer: Maintainance of constant internal environment is carried out in a process called Homeostasis.
Explanation:
Maintainance can of several types such as pH, temperature, and other substances such as Concentration of Ammonia in body. These all should maintain at constantly for stability in body. The maintenance of temperature is called thermo regulation.
E) Energy Pyramid
Technically it's an ecological pyramid, but E seems to be the closest to that.