How do saliva and tears prevent pathogens from entering your body

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.

In order to remain wellness the parts of the health triangle always need to be?

How many calories do you need to take away one pound