Natural Selection Lesson-Diseases

There is a species of beetle that has two variations in the population: brown beetles and green beetles. About 82% of all brown beetles survive to adulthood while only 31% of green beetles survive to adulthood. Which of the following statements is true about the fitness of these beetles?

The three species pictured do not share a common ancestor, yet have evolved to have a similar anatomy and life style. This is an example of ?

As smaller lizard like reptiles hid in rock crevices to avoid larger predators and feed on smaller insects they found that shorter legs could get further in and find more insects. Over time through many generations snakes evolved as the legs were slowly lost.