( Now ( ( ( the attraction ) ( between ( ( the ( two magnets ) ) ( ( together and ) ( causes ( them ( to ( move ( towards ( each other ) ) ) ) ) ) ) ) ) ) ( ( is ( a force ) ) . ) ) )
(ROOT (S (ADVP (RB Now)) (NP (NP (DT the) (NN attraction)) (PP (IN between) (NP (NP (DT the) (CD two) (NNS magnets)) (UCP (ADJP (RB together)) (CC and) (VP (VBZ causes) (S (NP (PRP them)) (VP (TO to) (VP (VB move) (PP (IN towards) (NP (DT each) (JJ other))))))))))) (VP (VBZ is) (NP (DT a) (NN force))) (. .)))
Now the attraction between the two magnets together and causes them to move towards each other is a force.
(ROOT (S (S (VP (VBG Increasing) (NP (NP (DT the) (NN distance)) (PP (IN between) (NP (DT the) (CD two) (NNS magnets)))))) (VP (MD will) (VP (VB cause) (NP (DT a) (NN decrease)) (PP (IN in) (NP (NP (DT the) (NN force)) (PP (IN of) (NP (NP (NN attraction)) (PP (IN between) (NP (CD two) (NNS magnets))))))))) (. .)))
Increasing the distance between the two magnets will cause a decrease in the force of attraction between two magnets.