It can make food a must have item because the more people there is, the more food the community will need to have
The answer is "facial feedback" effect.
The <span>facial feedback effect theory explains that when someone imitates some facial expressions it actually affect his or her emotional response, for example if during an even one person who is not enjoying the event is forced to smile and laugh, eventually he will find the even more joyful and might start enjoying the event.</span>
This is known as biodiversity. Biological diversity, or biodiversity, is the diversity of all living organisms in a biome or an ecosystem. It increases over time as new species are differentiated all the time and at a faster pace than other organisms become extinct. The longer the time the more the organisms will be created due to genetic differentiation.