QUESTION: Fix punctuation: When a company or business is doing well its stocks become a hot cake in the market and investors want to buy into it creating demand which drives up the stock values
ANS: When a company or business is doing well, its stocks become a hot cake in the market and investors want to buy into it, creating demand which drives up the stock values.

QUESTION: Fix punctuation: Seiji Kato and his associates at the Langley Center of NASA published in 2006 the results of an investigation of the effect of decreasing sea ice in the Arctic on the amount of radiant energy reflected from the Arctic
ANS: Seiji Kato and his associates at the Langley Center of NASA published in 2006 the results of an investigation of the effect of decreasing sea ice in the Arctic on the amount of radiant energy reflected from the Arctic.

QUESTION: Fix punctuation: Later in the winter also the root that is as much of it as you can must be removed
ANS: Later in the winter also the root, that is as much of it as you can, must be removed.

QUESTION: Fix punctuation: This is the original Danish ad sheet for The Living Daylights EON Productions 1987 issued by the films local distributor United International Pictures formerly United Artists
ANS:
This is the original Danish ad sheet for "The Living Daylights" (EON Productions 1987), issued by the film's local distributor United International Pictures (formerly United Artists).