Dissimilation stages in biology?

Dissimilation is the process of decomposition of organic compounds into simpler substances, in which energy is released. The opposite process is assimilation. The combination of these processes provides metabolism, which is necessary for all living things for their life. The end products of dissimilation are hydrogen dioxide, carbon dioxide and ammonia, which are then excreted from the body through the excretory systems. The energy generated after the breakdown of compounds is used by the body to ensure its vital functions.

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