( ( ( Uneven heating ) ( of ( ( ( ( Earth 's ) atmosphere ) , ) ( combined ( with ( its rotation ) ) ) ) ) ) ( ( causes ( complex ( weather patterns ) ) ) . ) )
(ROOT (S (NP (NP (NN Uneven) (NN heating)) (PP (IN of) (NP (NP (NP (NNP Earth) (POS 's)) (NN atmosphere)) (, ,) (VP (VBN combined) (PP (IN with) (NP (PRP$ its) (NN rotation))))))) (VP (VBZ causes) (NP (JJ complex) (NN weather) (NNS patterns))) (. .)))
Uneven heating of Earth's atmosphere, combined with its rotation causes complex weather patterns.
(ROOT (S (NP (NP (NN Uneven) (NN heating)) (PP (IN of) (NP (DT the) (NN atmosphere)))) (VP (VBP form) (NP (NN weather) (NNS patterns))) (. .)))