QUESTION: Fix punctuation: It is worth noting that by 1950 the 14th edition of this book had appeared
ANS: It is worth noting that by 1950 the 14th edition of this book had appeared.

QUESTION: Fix punctuation: The Hellenistic period 336 to 31 BCE is associated with Alexander the Greats conquest of the Persian Empire in the years 334323 BCE as well as with the subsequent period when several hundred new colonies were founded which spread Greek culture far into the former Persian Empire
ANS: The '''Hellenistic period''' (336 to 31 BCE) is associated with Alexander the Great's conquest of the Persian Empire in the years 334-323 BCE, as well as with the subsequent period, when several hundred new colonies were founded which spread Greek culture far into the former Persian Empire.

QUESTION: Fix punctuation: When spring approaches the evenings begin to get lighter and it is usually then that most people become tired of lectures
ANS: When spring approaches, the evenings begin to get lighter and it is usually then that most people become tired of lectures.

QUESTION: Fix punctuation: Cubic inches per second Volumetric flow rate
ANS:
Cubic inches per second, Volumetric flow rate