QUESTION: Fix punctuation: The result is that the molecule is not feeling a net force in any particular direction
ANS: The result is that the molecule is not feeling a net force in any particular direction.

QUESTION: Fix punctuation: Underwater Rugby UWR is a quite young sport that has its origin in the physical fitness training of German diving clubs and has little in common with normal Rugby except for the name
ANS: Underwater Rugby (UWR) is a quite young sport that has its origin in the physical fitness training of German diving clubs and has little in common with "normal" Rugby except for the name.

QUESTION: Fix punctuation: Three or more Scatter symbols displayed on the reels activate the Free Spins bonus game and you are awarded twenty free spins
ANS: Three or more Scatter symbols displayed on the reels activate the Free Spins bonus game, and you are awarded twenty free spins.

QUESTION: Fix punctuation: Nearby points of interest include a castle a synagogue and a museum
ANS:
Nearby points of interest include a castle, a synagogue and a museum.