QUES: For example in 1928 Peano presented a paper by Vacca on Fermat s method of descent to the Academy of Sciences of Turin 

correct the punctuation.

CORRECTED: For example in 1928 Peano presented a paper by Vacca on Fermat 's method of descent to the Academy of Sciences of Turin .


QUES: Nothing can come into existence out of chance occurrences or chaos

correct the punctuation.

CORRECTED: Nothing can come into existence out of chance occurrences or chaos.


QUES: While the short period of exercising is crucial to testosterone so is the intensity

correct the punctuation.

CORRECTED:
While the short period of exercising is crucial to testosterone so is the intensity.