( ( The ( burrowing process ) ) ( ( ( ( is ( ( an ( important behavior ) ) ( in thermoregulation ) ) ) , ) ( since ( it ( can ( ( ( protect ( the lizard ) ) ( from ( ( heat or ) cold ) ) ) ( depending ( on ( ( the temperature ) ( of ( ( ( the soil ) ( ( in which ) ( ( the animal ) ( is buried ) ) ) ) ( -LRB- ( ( ( Potter and ) ( Glass 1931 ) ) -RRB- ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (VBG burrowing) (NN process)) (VP (VBZ is) (NP (NP (DT an) (JJ important) (NN behavior)) (PP (IN in) (NP (NN thermoregulation)))) (, ,) (SBAR (IN since) (S (NP (PRP it)) (VP (MD can) (VP (VB protect) (NP (DT the) (NN lizard)) (PP (IN from) (NP (NN heat) (CC or) (NN cold))) (PP (VBG depending) (PP (IN on) (NP (NP (DT the) (NN temperature)) (PP (IN of) (NP (NP (DT the) (NN soil)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (DT the) (NN animal)) (VP (VBZ is) (VP (VBN buried))))) (PRN (-LRB- -LRB-) (NP (NP (NNP Potter)) (CC and) (NP (NNP Glass) (CD 1931))) (-RRB- -RRB-)))))))))))) (. .)))
The burrowing process is an important behavior in thermoregulation, since it can protect the lizard from heat or cold depending on the temperature of the soil in which the animal is buried (Potter and Glass 1931).
(ROOT (S (NP (NNP Thermoregulation)) (VP (VBZ is) (NP (NP (DT the) (NN process)) (SBAR (WHNP (WHADVP (WRB when)) (NNS animals)) (S (VP (VBP maintain) (NP (DT an) (JJ internal) (NN temperature))))))) (. .)))