Where does smoking ganja originate from?

Can the brain replace cells destroyed by alcohol? I have noticed that the skin under my eyes are almost always dark like I look under-slept. Are there any common causes to this or common remedies or solutions to this? Do nephrons form urine? Why do most heart attacks take place on Mondays? Is hysteria completely curable? Is smoking banned in any countries? How do you get rid of spots in 3 days? How do you pronounce periformis? Can you use a RealD 3D polarized glass for a Master Image system? What is the difference between animals muscles with endoskeletons and exoskeleton? What kind of cancer did Taylor love have? Which organ of the respiratory system expands and contracts automatically to force air into and out of the lungs? What does a tsh test of 2.8 mean? What are those blood cells called which stick together to form clot? Does Alzheimer's disease cause dementia or is it a form of dementia? Is conditions an abstract noun? Which leukemia is considered more a disease of later life? A type of pneumonia that AIDS patience develop? Does taking tetracycline during pregnancy affect development of tooth growth? Cant get pregnant after c section?