Nutrition food and diet contorl over all health
Answer:
Internal can be you don't want bad things happening to your body, you don't want drugs affecting your health,etc.External could be you don't want it to affect your family or people around you.For example, like a cigarette if you are smoking in public you can be affecting others passing by or hanging out with you(external)but if it's just you by yourself smoking it is damaging your lungs(internal)
To prevent wrong medications for sicknesses.
keep check on controlled substances.
Answer:
According to me, I think it B
If we eat slowly, I think it would control thr weight.
By having a clean environment and make sure the food is in good conditions as well as following the proper instructions for the meal (ex. washing the fruits)