( Also ( , ( earthquakes ( ( cause ( mass ( near ( the ( surface ( to ( get ( moved ( around ( which ( changes ( ( the moment ) ( of ( inertia ( of ( the earth ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB Also)) (, ,) (NP (NNS earthquakes)) (VP (VBP cause) (NP (NP (NN mass)) (PP (IN near) (NP (DT the) (NN surface) (S (VP (TO to) (VP (VB get) (VP (VBN moved) (PP (IN around) (SBAR (WHNP (WDT which)) (S (VP (VBZ changes) (NP (NP (DT the) (NN moment)) (PP (IN of) (NP (NP (NN inertia)) (PP (IN of) (NP (DT the) (NN earth)))))))))))))))))) (. .)))
Also, earthquakes cause mass near the surface to get moved around which changes the moment of inertia of the earth.
(ROOT (S (NP (NP (DT The) (NN movement)) (PP (IN of) (NP (NP (DT an) (NN air) (NN mass)) (PP (IN over) (NP (NP (NN earth) (POS 's)) (NN surface)))))) (VP (VBZ causes) (NP (JJ local) (NN weather) (NNS changes))) (. .)))