What type of chemical is found in water and builds up in fatty tissue and the liver this can cause skin rashes and acne like conditions as well as birth defects reproductive disorders and liver kidney damage?

True, using a pedometer can promote a physically active lifestyle.

Answerspermicides;

Immunization is the introduction of a foreign substance to provoke  the immune response system.  immunizations are the same as vaccinations. it introduces foreign (but dead/ weakened) illnesses to train the body to fight against them. specific viruses and bacteria have specific antigens, antigens act sort of like name tags. these name tags the immune system recognize what's dangerous to the body and what's safe. 

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