QUESTION: Fix punctuation: The fertiliser quantity also depends on the plants requirements ie the mass each plant forms
ANS: The fertiliser quantity also depends on the plant's requirements, i.e. the mass each plant forms.

QUESTION: Fix punctuation: This mental light this spiritual sunshine became stronger and stronger
ANS: This mental light, this spiritual sunshine became stronger and stronger.

QUESTION: Fix punctuation: Points are scored by playing the ball through the net as in basketball though the pointscoring rules are modified The main differences from the parent sport is the court below the padded basketball rim and backboard are four trampolines set into the floor which serve to launch players to great heights for slam dunks
ANS: Points are scored by playing the ball through the net, as in basketball, though the point-scoring rules are modified. The main differences from the parent sport is the court; below the padded basketball rim and backboard are four trampolines set into the floor which serve to launch players to great heights for slam dunks.

QUESTION: Fix punctuation: Holiday House for rent Klegod Vestjylland Denmark From vacation rental agency
ANS:
Holiday House for rent Klegod Vestjylland Denmark - From vacation rental agency