Answer:
type 1 diabetes
Explanation: pancreas can't make insulin because the immune system attacks it and destroys the cells that produce insulin. Kids and teens with type 1 diabetes are at risk for other autoimmune problems, but these aren't actually caused by the diabetes.
The answer is Social Gerontoloogy
As an energy source, To heal and build and repair tissue, To sustain growth, To help transport oxygen to the cells, To regulate body functions. hope this helped :)
I believe the muscle contracts
