liver
Yes fats are the most calorific energy source.
There is no permanent population in Antarctica, so neither rich or poor.
The food chain in the Southern Ocean that surrounds Antarctica is extremely appealing to leopard seals, because it is so rich in high-quality protein.
The protein-rich Southern Ocean is so rich because the food chain there is abundant. The food chain is short, and for months out of the year the ocean is frozen over, which removes some of the larger predators from the food chain.
Antarctica is rich in the data necessary to analyze -- study and potentially predict -- the health of planet earth.
because they produces lemons and farts!
They store it for food. It is a rich source of protein.
nutrient claim.
yes
Penguins, (various other bird species nest during the antarctic summer), several species of seals, whales and other marine life abound in the waters around antarctica, whose cold waters are rich in microscopic marine life (krill, etc), a good source of food for fish and large marine mammals.
The oceans that surround Antarctica are the coldest on earth, and the most productive on earth. Scientists continue to study the question you ask, because so far, there's no clear answer. We we have learned, however, is that most life lives longer in cooler temperatures than at hotter temperatures.