( ( ( ( ( ( All ( the baby ) ) ( s ( ( major organs ) ( begin ( to ( develop ( in ( ( the ( first ( ( ( 6 to ) 8 ) weeks ) ) ) ( of pregnancy ) ) ) ) ) ) ) ) ) , ) so ) ( ( ( tight control ) ( from ( ( the moment ) ( of conception ) ) ) ) ( is critical ) ) ) . )
(ROOT (S (S (NP (PDT All) (DT the) (NN baby)) (VP (VBZ s) (NP (NP (JJ major) (NNS organs)) (SBAR (S (VP (VBP begin) (S (VP (TO to) (VP (VB develop) (PP (IN in) (NP (NP (DT the) (JJ first) (QP (CD 6) (TO to) (CD 8)) (NNS weeks)) (PP (IN of) (NP (NN pregnancy)))))))))))))) (, ,) (IN so) (S (NP (NP (JJ tight) (NN control)) (PP (IN from) (NP (NP (DT the) (NN moment)) (PP (IN of) (NP (NN conception)))))) (VP (VBZ is) (ADJP (JJ critical)))) (. .)))
All the baby s major organs begin to develop in the first 6 to 8 weeks of pregnancy, so tight control from the moment of conception is critical.
(ROOT (S (PP (IN By) (NP (CD 8) (NNS weeks))) (, ,) (NP (DT all) (JJ major) (NNS organs)) (VP (VBP start) (S (VP (VBG developing)))) (. .)))