( Endotherms ( ( are ( animals ( that ( can ( ( ( maintain ( a ( ( fairly constant ) ( body temperature ) ) ) ) ( under ( ( a ( wide variety ) ) ( of ( ( environmental temperatures ) ( from ( ( intense heat ) ( of desert ) ) ) ) ) ) ) ) ( to ( freezing ( arctic cold ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Endotherms)) (VP (VBP are) (NP (NP (NNS animals)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB maintain) (NP (DT a) (ADJP (RB fairly) (JJ constant)) (NN body) (NN temperature)) (PP (IN under) (NP (NP (DT a) (JJ wide) (NN variety)) (PP (IN of) (NP (NP (JJ environmental) (NNS temperatures)) (PP (IN from) (NP (NP (JJ intense) (NN heat)) (PP (IN of) (NP (NN desert))))))))) (PP (TO to) (NP (JJ freezing) (JJ arctic) (NN cold))))))))) (. .)))
Endotherms are animals that can maintain a fairly constant body temperature under a wide variety of environmental temperatures from intense heat of desert to freezing arctic cold.
(ROOT (S (NP (NNS Endotherms)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (NNS organisms)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB maintain) (NP (DT a) (JJ stable) (NN body) (NN temperature)) (ADVP (RB even)) (PP (IN in) (NP (NP (DT the) (NN face)) (PP (IN of) (NP (NP (JJ large) (NNS fluctuations)) (PP (IN in) (NP (DT the) (JJ environmental) (NN temperature))))))))))))))) (. .)))