( These ( ( are ( things ( like ( ( the amount ) ( of ( ( ( food available ) , ) ( what ( enemies ( share ( ( ( ( ( the ( same ( living area ) ) ) ( as ( ( ( ( ( the snake ) , ) ( the weather ) ) and ) ( the temperature ) ) ) ) , ) and ) ( ( all kinds ) ( of ( other things ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT These)) (VP (VBP are) (NP (NP (NNS things)) (PP (IN like) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NP (NN food)) (ADJP (JJ available)) (, ,) (SBAR (WHNP (WP what)) (S (NP (NNS enemies)) (VP (VBP share) (NP (NP (NP (DT the) (JJ same) (VBG living) (NN area)) (PP (IN as) (NP (NP (DT the) (NN snake)) (, ,) (NP (DT the) (NN weather)) (CC and) (NP (DT the) (NN temperature))))) (, ,) (CC and) (NP (NP (DT all) (NNS kinds)) (PP (IN of) (NP (JJ other) (NNS things)))))))))))))) (. .)))
These are things like the amount of food available, what enemies share the same living area as the snake, the weather and the temperature, and all kinds of other things.
(ROOT (S (NP (NP (DT The) (NN amount)) (PP (IN of) (NP (NP (NN food)) (ADJP (JJ available) (PP (IN in) (NP (DT the) (NN area))))))) (ADVP (RB best)) (VP (VBZ determines) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NNS wolves)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB live) (PP (IN in) (NP (DT an) (NN area))))))))))) (. .)))