The acorn or oak nut (seed) gives it's dependence to dispersal agents, because the nut is to heavy for windblown dispersal the Oak tree depends on animals such as Jays and Squirrels, these animals...
The early CA native populations to use eat them. They would ground them, poor hot water over them to get the acid out, and then make them into a tortilla type of food and heat them over hot rocks. I...