We do not gain 2000 Ibs each year because humans undergo : DIgestion
The human digestive system
The human digestive system breakdowns every food consumed by the human body into the different nutrients contained in the food, it also excretes the excess or waste food out of the body through the excretory system.
This process of digestion makes it impossible for an individual who consumes 2000 Ibs of food each year to gain 2000 Ibs each year as well.
Hence we can conclude that We do not gain 2000 Ibs each year because humans undergo : DIgestion
Learn more about Digestion : https://brainly.com/question/882651
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