These are just a few of the millions of animals affected by Deforestation around the world.hese are just a few of the millions of animals affected by Deforestation around the world.
The Mayo Clinic defines hemoglobin as a protein molecule in red blood cells that, along with iron, transports oxygen to body tissues. The causes of low hemoglobin and hematocrit, called anemia, include blood loss, dietary deficiencies and genetic disease.
Low blood levels can be caused by: 1  not eating enough iron-rich foods. 2  an increased need for iron, e.g. during pregnancy. 3  iron being lost in the gut through conditions such as peptic ulcers, tumours or ulcerative colitis.