QUESTION: Fix punctuation: While the short period of exercising is crucial to testosterone so is the intensity
ANS: While the short period of exercising is crucial to testosterone so is the intensity.

QUESTION: Fix punctuation: Childs chair used by Frederik VI as a child
ANS: Child's chair, used by Frederik VI as a child.

QUESTION: Fix punctuation: The hydrogen sulphide is removed in an activated carbon filter
ANS: The hydrogen sulphide is removed in an activated carbon filter.

QUESTION: Fix punctuation: 4 years ago 0510 NuVid student college
ANS:
4 years ago 05:10 NuVid student, college