sentence2_structure: Increasing the distance between the two magnets<>will cause<>a decrease in the force of attraction between two magnets
sentence1: The magnetic force can cause two parallel wires to attract if they are both carrying an electric current (that is, a flow of electrons).
sentence2: Increasing the distance between the two magnets will cause a decrease in the force of attraction between two magnets.
question: Which factor will cause a decrease in the force of attraction between two magnets?