Why does iron deficiency cause these symptoms

Iron deficiency occurs when the body doesn't have enough of the mineral iron. ... Common causes of iron deficiency include inadequate iron intake due to poor diet or restrictive diets, inflammatory bowel disease, increased requirements during pregnancy and blood loss through heavy periods or internal bleeding.

Explanation:

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answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.