Why are hot tubs vulnerable to contamination. Will adding chlorine to a contaminated hot tub fix the issue. Explain.

Explanation:

Hot tubs are vulnerable to contamination because of there high temperature and open-top body which makes it a good environment for some bacteria (such as Legionella) to grow.

The addition of chlorine to a hot-tub does not fix this issue because chlorine (and other common disinfectant) easily breakdown in high water temperature and thus cannot operate at the high temperature of the hot tubs.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.