( endotherms ( mainly ( ( use ( ( ( ( ( metabolic heat ) ( to ( warm ( their bodies ) ) ) ) ( ( d -RRB- ) ( Ectotherms ( are ( ( cold-blooded animals ) ( with ( body temperatures ) ) ) ) ) ) ) ( that ( ( can not ) ( reach ( ( the ( high ( body temperatures ) ) ) ( of endotherms ) ) ) ) ) ) ( ( e -RRB- ) ( Ectotherms ( are ( all invertebrates ) ) ) ) ) ) ; ) ) )
(ROOT (S (NP (NNS endotherms)) (ADVP (RB mainly)) (VP (VBP use) (S (S (NP (JJ metabolic) (NN heat)) (VP (TO to) (VP (VB warm) (NP (PRP$ their) (NNS bodies))))) (S (LST (LS d) (-RRB- -RRB-)) (NP (NNP Ectotherms)) (VP (VBP are) (NP (NP (JJ cold-blooded) (NNS animals)) (PP (IN with) (NP (NN body) (NNS temperatures)))))) (S (NP (DT that)) (VP (MD can) (RB not) (VP (VB reach) (NP (NP (DT the) (JJ high) (NN body) (NNS temperatures)) (PP (IN of) (NP (NNS endotherms))))))) (S (LST (LS e) (-RRB- -RRB-)) (NP (NNP Ectotherms)) (VP (VBP are) (NP (DT all) (NNS invertebrates)))))) (: ;)))
endotherms mainly use metabolic heat to warm their bodies d) Ectotherms are cold-blooded animals with body temperatures that cannot reach the high body temperatures of endotherms e) Ectotherms are all invertebrates;
(ROOT (S (NP (NNP Metabolism)) (VP (VBZ produces) (NP (NN waste) (NN energy)) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NP (NN heat)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ helps) (S (NP (JJ warm-blooded) (PRN (-LRB- -LRB-) (NP (NNP endotherm)) (-RRB- -RRB-)) (NNS animals)) (VP (VB conserve) (CC and) (VB maintain) (NP (NN heat)) (PP (IN at) (NP (DT a) (ADJP (RB relatively) (JJ constant)) (NN body) (NN temperature))))))))))))) (. .)))