Maddie should ask her doctor what the terms he/she used (that she didn't understand) mean. Or she can go the sarcastic route and just say "In English please."
The amount of the energy in kilocalories that should be expended by a person should not be less than the amount of kcal present in the food that is eaten. In the problem given above, George should also be able to expend 750 kcal in order to process the food.
Hey, I'm a little confused on what your asking but. Heres my answers. No, HIV can only be contracted through sexual contact