The sun--solar energy--is at the heart of the cycle of life, with all the sustenance relationships referred to as the food web. The sun is the ultimate source of energy for animals, but its energy must be harnessed by plants before it can be used by animals. Animals get energy by processing complex foods.
Citizens of the World State are cremated when they die, so their bodies can be recycled and used as fertilizer. Their bodies aren't considered valuable, there are no funerals or grieving of the dead.
Hope this helps!
-Payshence xoxo
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Cells do not use the energy from oxidation reactions as soon as it is released. Instead, they convert it into small, energy-rich molecules such as ATP and nicotinamide adenine dinucleotide (NADH), which can be used throughout the cell to power metabolism and construct new cellular components.
