(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.
For the majority of families who do not harbour BRCA1 or BRCA2 mutations, it is considered likely that a number of genetic factors, each with a small cumulative contribution, are responsible. Five to 10 per cent of breast cancer patients have an inheritable form of breast cancer due to a mutation in BRCA1 or BRCA2.