What is your favorite and least favorite state?

How is the structure of our circulatory system and respiratory system related to the function of both these systems?

Aperson who doesn't have enough calcium in his or her diet is at risk for developing bones that are weak and break easily. this condition is known as  a.  osteoporosis.    b.  crohn's disease.    c.  celiac disease.    d.  hemophilia.

How can the stress response be used in a way. for example to build resilience.