Your skin is a kind of "specific" response to a pathogen true or false?

Causation can be proved by using an

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.

Can occur if you do not modify your workout after a break