This is because Pangaea explains that once there was one huge country that expanded across the whole world, but it split apart and animals that were once next to each other were drifting apart to other parts of the world where both would survive on both sides.
Answer:
sexual reproduction
Explanation:
asexual would not result in any variability
Depending on where that herbivore is on the food web they could eat food meant for other smaller animals making those animals have less food and cause them to die.
