( ( Being photoautotrophs ) ( , ( ( both organisms ) ( ( will ( ( ( ( grow , ) ( ( using CO2 ) ( from ( ( the atmosphere ) ( as ( their ( carbon source ) ) ) ) ) ) ) and ) ( light ( as ( the ( energy source ) ) ) ) ) ) . ) ) ) )
(ROOT (S (S (VP (VBG Being) (NP (NNS photoautotrophs)))) (, ,) (NP (DT both) (NNS organisms)) (VP (MD will) (VP (VP (VB grow) (, ,) (S (VP (VBG using) (NP (NNP CO2)) (PP (IN from) (NP (NP (DT the) (NN atmosphere)) (PP (IN as) (NP (PRP$ their) (NN carbon) (NN source)))))))) (CC and) (VP (VB light) (PP (IN as) (NP (DT the) (NN energy) (NN source)))))) (. .)))
Being photoautotrophs, both organisms will grow, using CO2 from the atmosphere as their carbon source and light as the energy source.
(ROOT (S (NP (NNS Photoautotrophs)) (VP (VP (VB capture) (NP (JJ light) (NN energy))) (, ,) (CC and) (VP (VB use) (NP (NN carbon) (NN dioxide)) (PP (IN as) (NP (PRP$ their) (NN carbon) (NN source))))) (. .)))