Answer:
B12 (cobalamin): Perhaps the most well-known of all the B vitamins, B12 is vital for neurological function, DNA production and red blood cell development. B12 is found naturally in animal sources like meats, eggs, seafood and dairy.
The placenta and the umbilical cord
Lipids would be the answer that you are looking for. When talking food energy it's best to speak in terms of calories. Therefore, lipids or fats offer the greatest amount of heat or energy.
Biosphere- protect habitats
Atmosphere- reduce auto emissions
Hydrosphere- reduce,reuse,recycle
Geosphere- limit fertilizer
