nuclear
Meat and Fats are mostly concentrated on in the food groups.
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Fats
Fats
Fats (lipids) offer the most concentrated energy source (i.e the most kilojoules of energy per gram, compared with other nutrients).
High-quality, concentrated forms of energy (such as electrical or mechanical energy) can be transformed into lower-quality, dispersed forms of energy (such as heat or sound) through various processes like friction or inefficiencies in energy conversion. This is described by the second law of thermodynamics, which states that in any energy transformation, some energy will be lost or converted into a less useful form.
fats
fats
fats