Final answer:
Anemia is an erythrocyte disorder characterized by inadequate erythropoiesis or hemoglobin synthesis, hemorrhage, and increased RBC destruction. It leads to a decrease in the number of red blood cells and a decrease in oxygen-carrying capacity of the blood.
Step-by-step explanation:
An inadequate erythropoiesis or hemoglobin synthesis, hemorrhage, and increased RBC destruction are all common causes of the erythrocyte disorder called anemia. Anemia is a condition in which the blood has an inadequate volume of red blood cells (RBCs), leading to a decrease in the amount of oxygen that the blood can carry. This can result in symptoms such as weakness, fatigue, and shortness of breath.