1. explain why it can be useful for you and your doctors to know your family's medical history, including information about parents and grandparents. (5 points) 2. what are the possible effects of contaminated water on the health of an individual or community? explain your answer in terms of what causes the contamination, the types of infectious agents involved in the related diseases, and how these diseases can spread. (5 points) 3. describe two types of drugs and the negative impact the abuse of these drugs can have on a person's health. (5 points)