Answer:
<h3>Crustaceans form a large, diverse arthropod taxon which includes such animals as crabs, lobsters, crayfish, shrimps, prawns, krill, woodlice, and barnacles.</h3>
May I see the graph in image form
The correct answer is B.
On this graph we can observe the workings of the stabilizing selection. Stabilizing selection tends to favor the average phenotype and eliminate the extremes. Essentially, this means that the natural selection is selecting the mean value of a trait as optimal. In our case, the mean weight of newborns is selected as optimal, because newborns born with less weight can be too weak to survive and the ones that have too much weight (are too big) can hurt the mother during birth.
Day is simply when a part of the world is getting direct sunlight and night is when the sun is not facing that part of the world and relies on the reflection of the sun on to the moon to get sunlight.