A normal blood cell is round and almost donut-like in shape. Sickle cells are hard, rigid, and shaped in a curve.
I’m not sure I understand your question but distracting yourself stops you from thinking about certain things
I would say lung cancer. Smoking affects ur lungs the most
Your heart is very important. the reason your heart is important because the heart keeps blood that's full of oxygen circulating through your body. the heart is also needed for survival, without one you would be alive today. The heart also sends blood around the body. The blood provides the oxygen and nutrients which is needed.
Car accidents I think I’m not for sure