( ( ( This balance ) ( of radiation ) ) ( ( is ( maintained ( by ( ( a ( complex system ) ) ( of ( reradiation ( of ( ( thermal energy ) ( between ( ( the ( Earth ( and ( water vapor ) ) ) ) ( in ( the atmosphere ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT This) (NN balance)) (PP (IN of) (NP (NN radiation)))) (VP (VBZ is) (VP (VBN maintained) (PP (IN by) (NP (NP (DT a) (JJ complex) (NN system)) (PP (IN of) (NP (NP (NN reradiation)) (PP (IN of) (NP (NP (JJ thermal) (NN energy)) (PP (IN between) (NP (NP (DT the) (NN Earth) (CC and) (NN water) (NN vapor)) (PP (IN in) (NP (DT the) (NN atmosphere))))))))))))) (. .)))
This balance of radiation is maintained by a complex system of reradiation of thermal energy between the Earth and water vapor in the atmosphere.
(ROOT (S (NP (NP (NNS Gases)) (PP (JJ such) (IN as) (NP (NN co2) (CC and) (NN methane)))) (VP (MD can) (VP (NN trap) (NP (NP (JJ thermal) (NN energy)) (PP (IN in) (NP (NP (NN earth) (POS 's)) (NN atmosphere)))) (PP (IN before) (S (VP (VBG radiating) (NP (PRP it)) (PP (IN into) (NP (NN space)))))))) (. .)))