Like many forms of substance abuse alcoholism develops through stages. which of the following stages is the most advanced and the most difficult to recover from

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.

Blood cells bring oxygen to cells and take carbon dioxide away. true or false

First to answer will be the brainliest i need the answer asap