The population in this area are these precious ladybugs and their habitat has a lot of green areas and is a really calm place.
NATURAL SELECTION
We can observe that in this population of ladybugs, there are variations in their characteristics (green and red ladybugs).
ADAPTATION
But now, there was a change in their habitat, and a bunch of birds (predators) came along to take advantage of these ladybugs.
THE END
Now that the predators were in the ladybug's habitat, just the green ladybugs were able to camouflage themselves in the grass, which means nature select this organism to survive. While the red ladybugs are not able to camouflage themselves to survive from the predators.
These green ladybugs were the ones that could survive and reproduce themselves while they pass down their characteristics to their offsprings, and red ladybugs were slowly disappearing.
Over many years of generations, the population changed and evolved. Now only the best organisms to survive in this habitat were populating this place. And these organisms were in this case the green ladybugs.