In this natural selection video, ecological variation (e.g., nutrient availability) and nutrient-dependent pheromone-controlled directional natural selection for food enables adaptations.
For contrast, there should be a similar video that exemplifies mutation-driven evolution with an animal model of cause and effect.
Jay R. Feierman: I am absolutely certain that if you showed this statement to any professor of biology or genetics in any accredited university anywhere in the world that 100% of them would say that “Random mutations are the substrate upon which directional natural selection acts” is a correct and true statement.
The ants in the video representation are not naturally selecting anything but food.
Jay R. Feierman: Variation is not nutrient availability and the something that is doing the selecting is not the individual organism. A feature of an educated person is to realize what they do not know. Sadly, you don’t know that you have an incorrect understanding Darwinian biological evolution.