Ch\u00fang ta bi\u1ebft r\u1eb1ng, 65 tri\u1ec7u n\u0103m tr\u01b0\u1edbc, kh\u1ee7ng long \u0111\u00e3 b\u1ecb tuy\u1ec7t ch\u1ee7ng. Mu\u1ed1n t\u00ecm hi\u1ec3u v\u1ec1 t\u00ecnh h\u00ecnh sinh s\u1ed1ng c\u1ee7a kh\u1ee7ng long l\u00fac \u0111\u00f3, ch\u1ec9 c\u00f3 th\u1ec3 d\u1ef1a v\u00e0o b\u1ed9 x\u01b0\u01a1ng v\u00e0 tr\u1ee9ng ho\u00e1 th\u1ea1ch c\u1ee7a kh\u1ee7ng long gi\u1ed1ng nh\u01b0 nh\u1eefng qu\u1ea3 c\u1ea7u \u0111\u00e1, r\u1ed1t cu\u1ed9c c\u00f3 th\u1ec3 cho c\u00e1c nh\u00e0 sinh v\u1eadt c\u1ed5 h\u1ecdc th\u1ea5y bao nhi\u00eau \u0111\u1ea7u m\u1ed1i c\u00f3 gi\u00e1 tr\u1ecb v\u1eady?<\/p>\n\n\n\n
N\u0103m 1922, c\u00e1c nh\u00e0 khoa h\u1ecdc M\u00f4ng C\u1ed5 \u0111\u00e3 ph\u00e1t hi\u1ec7n th\u1ea5y nh\u1eefng ho\u00e1 th\u1ea1ch th\u00e0nh t\u1ed5 c\u1ee7a kh\u1ee7ng long, tr\u01b0\u1edbc ti\u00ean n\u00f3 \u0111\u00e3 ch\u1ee9ng minh \u0111\u01b0\u1ee3c m\u1ed9t \u0111i\u1ec1u l\u00e0 \u00edt nh\u1ea5t c\u00f3 m\u1ed9t b\u1ed9 ph\u1eadn kh\u1ee7ng long \u0111\u1ebb tr\u1ee9ng.<\/p>\n\n\n\n
Do \u1ed5 tr\u1ee9ng c\u1ee7a kh\u1ee7ng long n\u00e0y c\u00f3 h\u00ecnh r\u1ebb qu\u1ea1t x\u1ebfp theo th\u1ee9 t\u1ef1, t\u1ea7ng trong c\u00e0ng h\u01b0\u1edbng v\u1ec1 ph\u00eda t\u00e2m v\u00f2ng tr\u00f2n th\u00ec s\u1ed1 l\u01b0\u1ee3ng tr\u1ee9ng c\u1ee7a kh\u1ee7ng long c\u00e0ng \u00edt, nh\u01b0ng th\u1ec3 t\u00edch l\u1ea1i c\u00e0ng l\u1edbn. C\u00e1c nh\u00e0 khoa h\u1ecdc c\u0103n c\u1ee9 v\u00e0o hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y suy \u0111o\u00e1n: v\u00e0o m\u00f9a sinh \u0111\u1ebb, kh\u1ee7ng long c\u00f3 l\u1ebd giao ph\u1ed1i v\u1edbi nhau th\u00e0nh b\u1ea7y. Tr\u01b0\u1edbc khi kh\u1ee7ng long c\u00e1i \u0111\u1ebb tr\u1ee9ng, \u0111\u1ea7u ti\u00ean d\u00f9ng ch\u00e2n tr\u01b0\u1edbc \u0111\u00e0o m\u1ed9t h\u1ed1 tr\u00f2n, ph\u1ea7n gi\u1eefa h\u1ed1 g\u1ed3 l\u00ean. Ti\u1ebfp theo, n\u00f3 v\u00e2y l\u1ea5y h\u1ed1 \u0111\u1ec3 \u0111\u1ebb tr\u1ee9ng, m\u1ed7i l\u1ea7n \u0111\u1ebb m\u1ed9t v\u00f2ng th\u00ec d\u00f9ng \u0111\u1ea5t l\u1ea5p l\u00ean, l\u1ea1i ti\u1ebfp t\u1ee5c \u0111\u1ebb v\u00f2ng th\u1ee9 hai, l\u1ea1i d\u00f9ng \u0111\u1ea5t l\u1ea5p l\u00ean, t\u1ed1i \u0111a c\u00f3 th\u1ec3 \u0111\u1ebb \u0111\u01b0\u1ee3c 4 v\u00f2ng tr\u1ee9ng. X\u1ebfp tr\u1ee9ng l\u1ea1i th\u00e0nh h\u00ecnh r\u1ebb qu\u1ea1t c\u00f3 th\u1ec3 h\u1ea1n ch\u1ebf h\u1ea5p thu \u00e1nh n\u1eafng M\u1eb7t Tr\u1eddi t\u1ed1i \u0111a, c\u00f3 l\u1ee3i cho vi\u1ec7c n\u1edf tr\u1ee9ng \u0111\u01b0\u1ee3c th\u00e0nh c\u00f4ng.<\/p>\n\n\n\n
\u0110\u1ebfn nh\u1eefng n\u0103m 80 c\u1ee7a th\u1ebf k\u1ec9 XX, c\u00e1c nh\u00e0 sinh v\u1eadt c\u1ed5 h\u1ecdc ph\u00e1t hi\u1ec7n, trong th\u1eddi k\u00ec kh\u1ee7ng long s\u1eafp tuy\u1ec7t ch\u1ee7ng, nhi\u1ec1u v\u1ecf tr\u1ee9ng c\u1ee7a tr\u1ee9ng kh\u1ee7ng long, c\u00f3 v\u1ecf qu\u00e1 d\u00e0y, c\u00f3 v\u1ecf qu\u00e1 m\u1ecfng. V\u1ecf tr\u1ee9ng qu\u00e1 d\u00e0y s\u1ebd b\u1ecbt l\u1ed7 kh\u00ed qu\u00e1 nh\u1ecf tr\u00ean th\u00e2n v\u1ecf, khi ph\u00f4i thai ph\u00e1t tri\u1ec3n s\u1ebd b\u1ecb ch\u1ebft v\u00ec thi\u1ebfu oxi. V\u1ecf tr\u1ee9ng qu\u00e1 m\u1ecfng th\u01b0\u1eddng l\u00e0 v\u1eabn ch\u01b0a tr\u01b0\u1edfng th\u00e0nh ho\u00e0n to\u00e0n th\u00ec \u0111\u00e3 sinh ra, lo\u1ea1i tr\u1ee9ng n\u00e0y ch\u1ec9 c\u1ea7n h\u01a1i \u0111\u1eadp nh\u1eb9 m\u1ed9t ch\u00fat s\u1ebd v\u1ee1.<\/p>\n\n\n\n
Tr\u1ee9ng v\u1ecf d\u00e0y v\u00e0 tr\u1ee9ng v\u1ecf m\u1ecfng xu\u1ea5t hi\u1ec7n nh\u01b0 th\u1ebf n\u00e0o nh\u1ec9? C\u00e1c nh\u00e0 sinh v\u1eadt c\u1ed5 h\u1ecdc khi nghi\u00ean c\u1ee9u qu\u00e1 tr\u00ecnh g\u00e0 v\u1ecbt \u0111\u1ebb tr\u1ee9ng \u0111\u00e3 ph\u00e1t hi\u1ec7n, khi ch\u00fang chu\u1ea9n b\u1ecb cho tr\u1ee9ng ra ngo\u00e0i c\u01a1 th\u1ec3, n\u1ebfu nh\u01b0 b\u1ea5t ng\u1edd g\u1eb7p ph\u1ea3i nh\u1eefng s\u1ef1 k\u00edch th\u00edch n\u00e0o \u0111\u00f3, nh\u01b0 nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng kh\u00ed thay \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t, b\u1ecb kinh \u0111\u1ed9ng\u2026, ho\u00f3c m\u00f4n trong c\u01a1 th\u1ec3 xu\u1ea5t hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i, tr\u1ee9ng s\u1ebd r\u00fat v\u1ec1, ti\u1ebfp t\u1ee5c ph\u00e1t d\u1ee5c trong \u1ed1ng d\u1eabn tr\u1ee9ng. Nh\u01b0 v\u1eady, b\u00ean ngo\u00e0i v\u1ecf tr\u1ee9ng c\u0169 s\u1ebd t\u0103ng th\u00eam m\u1ed9t t\u1ea7ng v\u1ecf tr\u1ee9ng m\u1edbi. \u0110\u00f4i khi do s\u1ef1 k\u00edch th\u00edch c\u1ee7a b\u00ean ngo\u00e0i d\u1eabn \u0111\u1ebfn k\u00edch t\u1ed1 sinh d\u1ee5c m\u1ea5t c\u00e2n b\u1eb1ng, th\u00fac \u0111\u1ea9y tr\u1ee9ng ra ngo\u00e0i tr\u01b0\u1edbc, tr\u1ee9ng \u0111\u1ebb non s\u1ebd t\u1ea1o ra v\u1ecf tr\u1ee9ng r\u1ea5t m\u1ecfng.<\/p>\n\n\n\n
N\u1ebfu nh\u01b0 v\u1ecf tr\u1ee9ng d\u00e0y hay v\u1ecf tr\u1ee9ng m\u1ecfng c\u1ee7a kh\u1ee7ng long c\u0169ng l\u00e0 b\u1ecb s\u1ef1 k\u00edch th\u00edch c\u1ee7a b\u00ean ngo\u00e0i d\u1eabn \u0111\u1ebfn, v\u1eady th\u00ec, \u0111\u00f3 l\u00e0 s\u1ef1 k\u00edch th\u00edch b\u00ean ngo\u00e0i nh\u01b0 th\u1ebf n\u00e0o? C\u00e1c nh\u00e0 khoa h\u1ecdc l\u1eadp t\u1ee9c li\u00ean t\u01b0\u1edfng \u0111\u1ebfn “h\u1ecdc thuy\u1ebft va \u0111\u1eadp c\u1ee7a h\u00e0nh tinh nh\u1ecf” gi\u1ea3i th\u00edch s\u1ef1 tuy\u1ec7t ch\u1ee7ng c\u1ee7a kh\u1ee7ng long cho r\u1eb1ng Tr\u00e1i \u0110\u1ea5t c\u00f3 th\u1ec3 v\u00e0o l\u00fac \u0111\u00f3 b\u1ecb m\u1ed9t l\u1ea7n va \u0111\u1eadp m\u1ea1nh, l\u00e0m cho kh\u00ed h\u1eadu xu\u1ea5t hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t, \u0111\u00e2y c\u00f3 l\u1ebd ch\u00ednh l\u00e0 s\u1ef1 k\u00edch th\u00edch c\u1ee7a b\u00ean ngo\u00e0i r\u1ea5t l\u1edbn.<\/p>\n\n\n\n
T\u00f3m l\u1ea1i, th\u00f4ng qua nghi\u00ean c\u1ee9u tr\u1ee9ng ho\u00e1 th\u1ea1ch c\u1ee7a kh\u1ee7ng long, c\u00f3 th\u1ec3 t\u1eeb \u0111\u00f3 t\u00ecm hi\u1ec3u \u0111\u01b0\u1ee3c nhi\u1ec1u th\u00f4ng tin c\u1ee7a th\u1eddi \u0111\u1ea1i \u0111\u00f3, nh\u01b0 sinh \u0111\u1ebb t\u1ea1i ch\u1ed7 c\u1ee7a kh\u1ee7ng long, kh\u00ed h\u1eadu thay \u0111\u1ed5i, c\u1ea5u t\u1ea1o \u0111\u1ecba ch\u1ea5t thay \u0111\u1ed5i v\u00e0 m\u00f4i tr\u01b0\u1eddng sinh th\u00e1i thay \u0111\u1ed5i, v.v..<\/p>\n","protected":false},"excerpt":{"rendered":"
Ch\u00fang ta bi\u1ebft r\u1eb1ng, 65 tri\u1ec7u n\u0103m tr\u01b0\u1edbc, kh\u1ee7ng long \u0111\u00e3 b\u1ecb tuy\u1ec7t ch\u1ee7ng. Mu\u1ed1n t\u00ecm hi\u1ec3u v\u1ec1 t\u00ecnh h\u00ecnh sinh s\u1ed1ng c\u1ee7a kh\u1ee7ng long l\u00fac \u0111\u00f3, ch\u1ec9 c\u00f3 th\u1ec3 d\u1ef1a v\u00e0o b\u1ed9 x\u01b0\u01a1ng v\u00e0 tr\u1ee9ng ho\u00e1 th\u1ea1ch c\u1ee7a kh\u1ee7ng long gi\u1ed1ng nh\u01b0 nh\u1eefng qu\u1ea3 c\u1ea7u \u0111\u00e1, r\u1ed1t cu\u1ed9c c\u00f3 th\u1ec3 cho c\u00e1c nh\u00e0 sinh […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,10],"tags":[],"class_list":["post-8447","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-sinh-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8447","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=8447"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/8447\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=8447"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=8447"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=8447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}