A word that means a disease can be transmitted from one person to another ___

This may predispose someone to developing an illness ___

What is added to most public water systems to prevent cavities ___

What has caused the largest decrease in automobile deaths in the last century ___

Which disease was eradicated in the 1970's ___

What heavy metal is dangerous for fetal development and is found in large fish ___

What is a term for perceived patterns and expectations of behavior in a community ___

A product of the "greenhouse effect" from an excess of Co2 in the environment ___