Marrow- soft connective found inside a bone

Red Marrow- produces blood cells

Yellow Marrow- stores fat

-Bones can withstand more stress than granite or concrete
-Bones can heal themselves and become stronger
-Proper diet and exercise are important to bone health
-Bones require ample calcium

Osteoporosis- a condition where the minerals in the bones are lost
(mostly affects women, and the elderly); causes the bones to be weak
and brittle