( ( Sand lizards ) ( ( ( ( are ( ` ( ectothermic ' ) ) ) ( , ( ( which ( means ( they ( are ( unable ( to ( ( ( ( ( ( generate ( their ( own ( body heat ) ) ) ) and ) ( need ( to ( bask ( in ( the sun ) ) ) ) ) ) , ) or ) ( ( be ( in contact ) ) ( with ( warm surfaces ) ) ) ) ) ) ) ) ) ) , ) ) ) ( to ( raise ( body temperatures ) ) ) ) . ) )
(ROOT (S (NP (NN Sand) (NNS lizards)) (VP (VBP are) (ADJP (`` `) (JJ ectothermic) ('' ')) (PRN (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ means) (SBAR (S (NP (PRP they)) (VP (VBP are) (ADJP (JJ unable) (S (VP (TO to) (VP (VP (VB generate) (NP (PRP$ their) (JJ own) (NN body) (NN heat))) (CC and) (VP (VB need) (S (VP (TO to) (VP (VB bask) (PP (IN in) (NP (DT the) (NN sun))))))) (, ,) (CC or) (VP (VB be) (PP (IN in) (NP (NN contact))) (PP (IN with) (NP (JJ warm) (NNS surfaces)))))))))))))) (, ,)) (S (VP (TO to) (VP (VB raise) (NP (NN body) (NNS temperatures)))))) (. .)))
Sand lizards are 'ectothermic', which means they are unable to generate their own body heat and need to bask in the sun, or be in contact with warm surfaces, to raise body temperatures.
(ROOT (S (NP (NNP Ectothermic)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (NNS animals)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (RB not) (VP (VB raise) (NP (PRP$ their) (NN body) (NN temperature)) (PP (IN on) (NP (PRP$ their) (JJ own))))))))))) (. .)))