Why don't I understand?

What is the feminin hormona? Does age affect hand eye coordination? What are the cells in blood that collect oxygen in the lungs? Does echinacea cure chlamydia? Can your butt mold? How a bad diet can cause obesity? How do inflammation and fever help the immune system to fight pathogens? Careers that help people? Why does my finger have a sore on it and is swollen even though I didn't injure it? Is jock itch dangerous? What makes the feet of a pregnant woman swell up? Ways that the mouth can break down starchy foods? Explain the principle of scientific management.? Can you smoke weed when you have anemia? Can drinking cold liquids while you have a cold make it worse? Can caladryl be put on the vulvar area for itching? How do you help the body use sugar? Does having menstruation already mean you are safe from pregnancy? What do increased numbers of RBC's cause? So I have a badly ingrown toenail gross I know and the doctors said that I have no option other than to remove the whole of my toenail Will it grow back over time?