2. Once you recognize that this is a single replacement problem, determine whether the non-bonded element is a cation or anion. Then determine which element it will replace. Remember cations can only replace cations and anions can only replace anions.
If you haven't eaten for several hours and your blood sugar level drops, another hormone from your pancreas called glucagon signals your liver to break down the stored glycogen and release glucose back into your bloodstream.
Other causes of low red blood cell count are lead poisoning and sickle cell anemia, states Mayo Clinic.Aplastic anemia is a disease where the bone marrow doesn't make enough red blood cells, says the National Heart, Lung and Blood Institute.