Principle 2: overproduction and the struggle to survive
Principle 3: Different survival and reproduction (survival of the fittest)
The genetic variation that is happen here is that the bigger the stronger. For example when they are small a baby the lion aren't really strong they can't really defend themselves. when the lion are big they could attack they could defend themselves.
Principle 4: change in the Gene pool
The overproduction and struggle to survive is that the color they are bright so predator could see them and attack them. When lions are small they struggle to survive because they can't attack back their predators because they are not really strong.
The change in the gene is that their is more lion than monkeys because the monkeys are small they can't defend themselves. So lions eat them. their are more lions . Also their are more big lions than small one.