Pythagoras made a significant contribution to western music by:

Pythagoras made a significant contribution to western music by creating the Pythagorean tuning. This is the tuning used in the syntonic temperament where the ratie is 3:2, about 702 cents wide. It is a system of musical tuning in where all the frequency ratios are based on the 3:2 intervals. It is also known as the "pure" perfect fifth because it is one of the easiest tunes that can be tuned by the ear. 

for those of you who searched "which list includes four types of animal-like protists? " and keep getting these results, the answer is c: flagellates, sarcodines, ciliates, parasites

answer impressionism;