( Span ( ( shift ( with ( temperature change ) ) ) . ) )
(ROOT (S (NP (NNP Span)) (VP (VBP shift) (PP (IN with) (NP (NN temperature) (NN change)))) (. .)))
Span shift with temperature change .
(ROOT (S (NP (NNS Ectotherms)) (VP (VBP undergo) (S (NP (NP (DT a) (NN variety)) (PP (IN of) (NP (NP (NNS changes)) (PP (IN at) (NP (DT the) (JJ cellular) (NN level)))))) (VP (TO to) (VP (VB acclimatize) (PP (TO to) (NP (NP (NNS shifts)) (PP (IN in) (NP (NN temperature))))))))) (. .)))