( ( ( The ( CO2 concentration ) ) ( in ( the atmosphere ) ) ) ( ( is ( ( ( determined ( by ( the emissions ) ) ) ( ( ( from ( combustion ( of ( fossil fuels ) ) ) ) and ) ( by ( CO2 ( ( uptake and ) release ) ) ) ) ) ( by ( ( ( ( ( ( ( the ( Earth 's ) ) oceans ) , ) vegetation ) , ) and ) soils ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN CO2) (NN concentration)) (PP (IN in) (NP (DT the) (NN atmosphere)))) (VP (VBZ is) (VP (VBN determined) (PP (IN by) (NP (DT the) (NNS emissions))) (PP (PP (IN from) (NP (NP (NN combustion)) (PP (IN of) (NP (JJ fossil) (NNS fuels))))) (CC and) (PP (IN by) (NP (NN CO2) (NN uptake) (CC and) (NN release)))) (PP (IN by) (NP (NP (NP (DT the) (NN Earth) (POS 's)) (NNS oceans)) (, ,) (NP (NNP vegetation)) (, ,) (CC and) (NP (NNS soils)))))) (. .)))
The CO2 concentration in the atmosphere is determined by the emissions from combustion of fossil fuels and by CO2 uptake and release by the Earth's oceans, vegetation, and soils.
(ROOT (S (NP (JJ Co2) (NN gas)) (VP (VBZ is) (VP (VBN released) (PP (IN into) (NP (NP (DT the) (NN atmosphere)) (SBAR (WHADVP (WRB when)) (S (NP (JJ fossil) (NNS fuels)) (VP (VBP are) (VP (VBN burned))))))))) (. .)))