The curve on the left shows the heights of a population of penguins. the curve on the right shows the heights of the population five years later. what happened to the population of penguins a. stabilizing selecting b. disruptive selection c. directional selection d. lack of selection

The answer is C . Directional selection

Option C, Directional Selection

Explanation:

In the process of directional selection which is a form of natural selection based evolution in which any of the extreme phenotype is favored over all other phenotypes and thus the allele frequency or genotype also shift in the same direction over a certain period of time.  

The two graphs representing the heights of a population of penguins before and after five years more or less represent the preference of height trait over and above any other trait and that too for a specific range of height only.  

Hence, option C is correct

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.