The answer is; The bottommost layer in core sample 1 and the topmost layer in core sample 2.
This is because the physical properties of the layers look the same and in addition, they have the same fossils embedded in them. This means that the layers formed in the same time period when the cephalopods species existed (this can be determined by the mollusk shells fossils embedded in these layers).
Answer:
I think it is the first one
Hope this helps
Answer:
Median height is selected
Explanation:
Stabilizing selection is a particular type of natural selection where the mean of the trait in the population stabilizes on non-extreme phenotypes, thereby favoring intermediate phenotypic variants. At genetic level, stabilizing selection is shaped by selective forces that push the distribution of the trait in the population toward the average (median trait), it is a condition that may happen when a population is completely adapted to its environment. Thus, stabilizing selection acts to purge the extreme phenotypic variants via purifying selection. Stabilizing selection is considered to be one of the most important mechanisms controlling the distribution of different phenotypes after many cycles of artificial selection, it s for that reason that breeders believe that this type of natural selection is the most common in nature.