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

It is called Osteogenesis

This condition is called osteoporosis. This is the most common bone disease. With this disease, our bones become weak and are more likely to break. People with osteoporosis most often breaks bone in the wrist, spine, and hip.

Depression is lifelong, though you can get medication to with it. the difference between sadness and depression is that sadness lasts a little bit, depression last a long time and it goes on and off. people usually get depression through experiences they have been through, or genetics.