A reduced blood flow to the kidneys
increased demand for oxygen
The exact word for this would be ''erythropoiesis''.
Kidneys
During anemia decrease in oxygen tension causes the release of erythropoeitin which in turn causes hyperplasia of erythroid precursor cells thus causing an increase in the production of RBC's. This marrow response is called is effective erythropoiesis.
Hypoxia in the blood triggers erythropoiesis.
Erythropoiesis requires B12, Folic acid and iron.
Hemorrhage or living at high altitude
Yes - an increase in contractility would lead to an increase in stroke volume. An increased stroke volume would cause an increased cardiac output.
No
Rapidly rising production costs
Heating it.
Rapidly rising production costs