( ( ( ( ( ( Some mountains ) ( stand ( as ( stony peaks ) ) ) ) ( , ( ( ( some mountains ) ( are ( covered ( with snow ) ) ) ) , ) ) ) and ) ( ( some mountains ) ( ( gain recognition ) ( because ( they ( ( serve ( as homes ) ) ( to animals ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT Some) (NNS mountains)) (VP (VBP stand) (PP (IN as) (NP (JJ stony) (NNS peaks))))) (PRN (, ,) (S (NP (DT some) (NNS mountains)) (VP (VBP are) (VP (VBN covered) (PP (IN with) (NP (NN snow)))))) (, ,)) (CC and) (S (NP (DT some) (NNS mountains)) (VP (VB gain) (NP (NN recognition)) (SBAR (IN because) (S (NP (PRP they)) (VP (VBP serve) (PP (IN as) (NP (NNS homes))) (PP (TO to) (NP (NNS animals)))))))) (. .)))
Some mountains stand as stony peaks, some mountains are covered with snow, and some mountains gain recognition because they serve as homes to animals.
(ROOT (S (NP (NNS Scientists)) (VP (VBP know) (SBAR (IN that) (S (NP (DT some) (NNS mountains)) (VP (VBD were) (ADVP (RB once)) (PP (IN at) (NP (NP (DT the) (NN bottom)) (PP (IN of) (NP (DT an) (NN ocean))))) (SBAR (IN because) (S (NP (JJ marine) (NNS fossils)) (VP (VBP have) (VP (VBN been) (VP (VBN found) (PP (IN on) (NP (NP (DT the) (NNS peaks)) (PP (IN of) (NP (DT some) (NNS mountains)))))))))))))) (. .)))