An integrated curriculum involves learning goals across multiple content areas.
Alcohol users behave differently before the drug reaches their brain
If you mean humans have 5 senses (taste touch hear smell see) YES
Nutrition to me means "what you need to live healthy". There are many factors in nutrition that you need everyday in order to be healthy. If we didn't have "Nutrition" we wouldn't have "Nutritional values", which calculate out how much we are supposed to consume.
Hope this helps!