Did plants evolve too? Did they just happen to evolve into nutritional suppliers for what human needs for life? Or did humans evolve last and decide they could get potassium for from say bananas. What was the bridge from the nutrients provided from plants to the needs for them by the body. Why don't we just evolve enough we no longer have to worry about scurvy and just eliminate the need for vitamin C? Which came first stomach acid or teeth or a mouth or a stomach for that matter?