Final answer:
The second stage of iron deficiency, called iron-deficiency erythropoiesis, involves a decrease in iron transport and impaired red blood cell production.
Step-by-step explanation:
The second stage of iron deficiency, in which the body experiences a decrease in the transport of iron, is called iron-deficiency erythropoiesis. During this stage, the body's ability to produce red blood cells is impaired due to the lack of iron. This can lead to symptoms such as fatigue, weakness, and dizziness.
Learn more about Iron deficiency and its stages