A food chain, according to Wikipedia, is the flow of energy from one organism to the next and to the next and so on. You start with what’s called a primary producer, usually a being that rates low in terms of evolutionary development and differentiation, and go successively through various trophic levels of predators feeding [...]
Yvonne Yen Liu is a nerd for the racial justice movement. She lives in Oakland, California. You can write to her at