The Holocaust! Hope this helps you with your answer.
Answer:
Horse because way before time horses rode free in the wild in North America. It was domesticated because it was free to be wild.
Explanation:
I believe the answer is: No, this does not need to be reported since it is unrelated to participation in the study.
Unless a person is induced with chemical substance, The cause of heart attack is most likely diet and lifestyle that has been building up over time.
Since the research is revolved around attitudes towards hygiene and disease prevention, they would only observe the subject's behaviour, not making them digesting any substance.
In 1980, the Department of Health, Education, and Welfare was split. The Department of Education became its own entity and the Department of Health and Human Services also became its own entity with the Welfare sector falling beneath it.