Why the left av valves is bi cuspid while right av valves is try cuspid

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.