Answer:
![\color{Blue}\huge\boxed{Answer}](https://img.qammunity.org/2022/formulas/physics/college/zo7sb44vip8zbllvoelxm0qb36fxxvsi7o.png)
The body regulates those levels in an example of homeostasis. When levels decrease, the parathyroid releases hormones. If calcium levels become too high, the thyroid helps out by fixing calcium in the bones and lowering blood calcium levels. The nervous system helps keep homeostasis in breathing patterns.