The right answer is bone marrow (specifically red bone marrow).
Bone marrow is a tissue located in the center of the bones.
It exists in two forms: the yellow marrow (adipose tissue), which takes the name of gray marrow as it ages, and the red marrow, responsible for hematopoiesis. The latter produces the different types of blood cells: white blood cells, red blood cells (erythrocytes, the diminution of their number causes anemia), and platelets.
economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.
on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.