What causes vericous vains?

Are bones live tissue? What is stronger a brick or skull? Why continue taking medications? Does a reptile have a cerebellum? Why is it when i get all the blackheads out of my nose they reappear a miniute after i just got rid of them all How can I stop this? How would a biological psychologist explain the symptoms of a schizophrenia patient? Is 198 platelet normal? What part of the body does the spinal twist stretch? What percentage of blood alcohol concentration is the first sign of impairment? What causes hard time removing bowels? Why does muscles have a refractory period? How do you demonstrate independence and initiative at school at work? Why bone and blood whaich have strikingly diverse structures? Subcutaneous tissue is called the superficial and what? Menstrual flow results in the discharge of what? Is zote good for pimples? Who we can check if you are pregnant or not? What does grinding grain mean? List 3 examples of automatic responses controlled by the nervous? When can you drink alcohol after a partial nephrectomy?