(4) With the exception of hoses used to extinguish fires, any hose connected to. a fire hydrant must be equipped with either an approved backflow prevention. device or an approved four (4) inch air gap, unless in the Department's opinion, the application does not pose a backflow hazard, such as watering a community.
What was most likely the cause of Marie Curie's leukemia? a. Radiation c. Pollution b. Smoking d. Genetics. a. Radiation was most likely the cause of Marie Curie's leukemia.
Leukemia. Leukemia is a type of cancer found in your blood and bone marrow and is caused by the rapid production of abnormal white blood cells.These abnormal white blood cells are not able to fight infection and impair the ability of the bone marrow to produce red blood cells and platelets.n myelogenous leukemia, abnormal cell growth occurs in the marrow cells that mature into red blood cells, white blood cells, and platelets. There are four broad classifications of leukemia: 1  Acute lymphocytic leukemia (ALL). 2  Acute myelogenous leukemia (AML).