( ( Natural selection ) ( ( is ( ( the process ) ( ( by which ) ( ( ( some individuals ) ( with ( certain traits ) ) ) ( are ( more ( likely ( to ( ( ( ( survive and ) produce ) ( ( greater numbers ) ( of offspring ) ) ) ( than ( ( other organisms ) ( of ( the ( same species ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Natural) (NN selection)) (VP (VBZ is) (NP (NP (DT the) (NN process)) (SBAR (WHPP (IN by) (WHNP (WDT which))) (S (NP (NP (DT some) (NNS individuals)) (PP (IN with) (NP (JJ certain) (NNS traits)))) (VP (VBP are) (ADJP (RBR more) (JJ likely) (S (VP (TO to) (VP (VB survive) (CC and) (VB produce) (NP (NP (JJR greater) (NNS numbers)) (PP (IN of) (NP (NN offspring)))) (PP (IN than) (NP (NP (JJ other) (NNS organisms)) (PP (IN of) (NP (DT the) (JJ same) (NN species)))))))))))))) (. .)))
Natural selection is the process by which some individuals with certain traits are more likely to survive and produce greater numbers of offspring than other organisms of the same species.
(ROOT (S (NP (JJ Natural) (NN selection)) (VP (VBZ is) (NP (NP (DT the) (NN process)) (SBAR (WHNP (WDT that)) (S (VP (VBZ allows) (NP (NNS organisms)) (PP (IN with) (NP (JJR better) (NNS traits) (S (VP (TO to) (VP (VB survive) (CC and) (VB produce))))))))))) (. .)))