Answers. Best Answer: take the two laces, cross them, put one lace under the cross, pull. take laces again make laces into loop (make an O shape) cross loops put 1 loop under cross, pull, being careful to pull on sides connected to 1st knot, so as not to undo loops. you're done. Source(s):
In the United Sates, sickle cell anemia affects tens of thousands of blacks, and variations of it are seen in whites of Mediterranean, Middle-Eastern and East Indian descent. Hemoglobin is the oxygen-carrying protein of red blood cells. In sickle cell anemia, abnormal blood cells turn rigid, assume a sickle shape and block vessels. The painful episodes associated with the disease are fewer among patients who have a naturally higher level of fetal hemoglobin, which normally diminishes as people age.
In iron deficiency anemia, the red cells appear abnormal and are unusually small (microcytic) and pale (hypochromic). The pallor of the red cells reflects their low hemoglobin content. The prevalence of iron deficiency anemia spans all ages and races. In children, iron deficiency causes developmental delays, behavioral disturbances, failure to thrive (grow) and increased infections. Iron deficiency is a major problem in developed countries such as the US, Canada, the UK and across Europe.