First Signs of Miscarriage. One of the first signs of miscarriage is vaginal bleeding. Up to 25 percent of all pregnant women have bleeding at some point in pregnancy, about half of those will have a miscarriage. Bleeding that is a sign of miscarriage may be scant or heavy.
Signs and Symptoms of Iron Deficiency. Signs and symptoms of iron deficiency may include brittle nails, swelling or soreness of the tongue, cracks in the sides of the mouth, an enlarged spleen, and frequent infections. People who have iron-deficiency anemia may have an unusual craving for nonfood items, such as ice, dirt, paint, or starch.
The evidence of chemical reaction in the rusting of an iron nail is  a color change. This is due to the formation of iron oxide, which  is the reaction between iron and oxyg â¦ en.