Mutations (changes) to the DNA within the cells.
Carpet, meta carpel and phalanges
Answer:
The chart shows how well each beetle with each trait were able to survive in their environments, and Mutant 1 was clearly out living the other two, because as you can see mutant 2 has only last for at least one generation, while the non-mutated one lived a little longer. This is because Mutant 1 developed the trait that made its shell darker, and thus it's easier for them to hide from predators, and they were able to successfully pass on their genes to their offspring so now they can do the same.
D it would grow until it had to compete for food
The answer to this question would be: discrimination
Discrimination has its own adaptive value that was beneficial to the survival. By being discriminative to the predator, someone can perceive danger faster thus can react more quickly. Other than a lion, this discrimination can be triggered in snakes, spider, or other dangerous animals.