Tr\u00ean Tr\u00e1i \u0110\u1ea5t m\u00e0 ch\u00fang ta sinh s\u1ed1ng t\u1eebng gi\u1edd, t\u1eebng ph\u00fat \u0111ang x\u1ea3y ra s\u1ef1 tu\u1ea7n ho\u00e0n v\u1eadt ch\u1ea5t v\u00e0 c\u00e1c d\u00f2ng ch\u1ea3y n\u0103ng l\u01b0\u1ee3ng. C\u00f3 nh\u1eefng c\u00e1i ta c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y, nh\u01b0ng c\u00f3 nh\u1eefng c\u00e1i kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c. V\u00ed d\u1ee5 th\u1ef1c v\u1eadt m\u00e0u xanh ti\u1ebfn h\u00e0nh quang h\u1ee3p, ch\u00fang h\u00fat kh\u00ed cacbonic, nh\u1ea3 ra kh\u00ed oxi; th\u1ee7y t\u1ea3o h\u00fat c\u00e1c ch\u1ea5t dinh d\u01b0\u1ee1ng trong n\u01b0\u1edbc, c\u00e1c lo\u00e0i c\u00e1 \u0103n c\u1ecf d\u00f9ng th\u1ee7y t\u1ea3o l\u00e0m th\u1ee9c \u0103n, c\u00e1c lo\u00e0i c\u00e1 \u0103n th\u1ecbt l\u1ea1i \u0103n th\u1ecbt lo\u00e0i c\u00e1 n\u00e0y, v.v\u2026 Trong qu\u00e1 tr\u00ecnh c\u00e1c ch\u1ea5t v\u00e0 n\u0103ng l\u01b0\u1ee3ng n\u00e0y di d\u1eddi, chuy\u1ec3n h\u00f3a, ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m c\u0169ng tham gia v\u00e0o \u0111\u00f3. C\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m th\u1ea3i v\u00e0o kh\u00f4ng kh\u00ed, th\u00f4ng qua n\u01b0\u1edbc m\u01b0a th\u1ea9m th\u1ea5u v\u00e0o \u0111\u1ea5t, \u0111\u01b0\u1ee3c th\u1ef1c v\u1eadt h\u1ea5p th\u1ee5. Khi \u0111\u1ed9ng v\u1eadt \u0103n nh\u1eefng th\u1ef1c v\u1eadt n\u00e0y th\u00ec \u0111\u1ed3ng th\u1eddi c\u0169ng h\u1ea5p th\u1ee5 lu\u00f4n c\u1ea3 ch\u1ea5t \u00f4 nhi\u1ec5m trong \u0111\u00f3. Ch\u1ea5t \u00f4 nhi\u1ec5m c\u00f3 th\u1ec3 th\u00f4ng qua kh\u00e2u th\u1ef1c ph\u1ea9m kh\u00f4ng ng\u1eebng di d\u1eddi, chuy\u1ec3n h\u00f3a v\u00e0 t\u00edch t\u1ee5 l\u1ea1i trong c\u01a1 th\u1ec3 sinh v\u1eadt. Ch\u00fang ta bi\u1ebft r\u1eb1ng v\u1eadt ch\u1ea5t trong v\u00f2ng di \u0111\u1eddi, chuy\u1ec3n h\u00f3a trong c\u01a1 th\u1ec3 sinh v\u1eadt l\u00e0 kh\u00f4ng c\u00f3 bi\u00ean gi\u1edbi qu\u1ed1c gia, v\u00ec v\u1eady \u00f4 nhi\u1ec5m c\u0169ng kh\u00f4ng c\u00f3 bi\u00ean gi\u1edbi qu\u1ed1c gia.<\/p>\n\n\n\n
C\u00f3 th\u1ec3 b\u1ea1n s\u1ebd h\u1ecfi r\u1eb1ng, s\u00f4ng Ho\u00e0ng H\u00e0, Ho\u00e0i H\u00e0 c\u1ee7a Trung Qu\u1ed1c b\u1ecb \u00f4 nhi\u1ec5m, nh\u01b0ng \u0111i\u1ec1u \u0111\u00f3 kh\u00f4ng g\u00e2y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c con s\u00f4ng kh\u00e1c. Nh\u01b0ng trong th\u1ef1c t\u1ebf t\u1ea5t c\u1ea3 m\u1ecdi con s\u00f4ng \u0111\u1ec1u ch\u1ea3y ra bi\u1ec3n, v\u00ec v\u1eady \u00f4 nhi\u1ec5m c\u1ee7a d\u00f2ng s\u00f4ng l\u00e0m cho bi\u1ec3n t\u0103ng th\u00eam \u00f4 nhi\u1ec5m, khi\u1ebfn cho s\u1ef1 sinh t\u1ed3n c\u1ee7a c\u00e1c sinh v\u1eadt ph\u00f9 du trong bi\u1ec3n b\u1ecb uy hi\u1ebfp nghi\u00eam tr\u1ecdng. \u00d4xi c\u1ee7a kh\u00ed quy\u1ec3n c\u00f3 \u0111\u1ebfn \u1eb3 l\u00e0 do c\u00e1c sinh v\u1eadt ph\u00f9 du trong bi\u1ec3n th\u00f4ng qua t\u00e1c d\u1ee5ng quang h\u1ee3p m\u00e0 s\u1ea3n sinh ra. Do \u0111\u00f3 cho d\u00f9 l\u00e0 s\u00f4ng \u1edf v\u00f9ng n\u00e0o b\u1ecb \u00f4 nhi\u1ec5m \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u201cs\u1ea3n l\u01b0\u1ee3ng\u201d c\u1ee7a oxi tr\u00ean to\u00e0n Tr\u00e1i \u0110\u1ea5t. Th\u1ee7y tri\u1ec1u v\u00e0 nh\u1eefng d\u00f2ng h\u1ea3i l\u01b0u trong bi\u1ec3n c\u00f3 th\u1ec3 mang c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m \u0111i r\u1ea5t xa. V\u00ed d\u1ee5 nh\u1eefng \u0111\u00e1m nh\u1ef1a \u0111\u01b0\u1eddng tr\u00f4i n\u1ed5i t\u1eeb m\u1ed9t s\u1ed1 \u0111\u1ea3o c\u1ee7a Nh\u1eadt, qua h\u1ea3i l\u01b0u v\u1eadn chuy\u1ec3n \u0111\u00e3 kh\u00f4ng ng\u1eebng xu\u1ea5t hi\u1ec7n \u1edf c\u00e1c b\u00e3i c\u00e1t tr\u00ean b\u1edd bi\u1ec3n M\u1ef9 v\u00e0 Cana\u0111a. V\u00ec v\u1eady \u00f4 nhi\u1ec5m bi\u1ec3n th\u01b0\u1eddng kh\u00f4ng ch\u1ec9 gi\u1edbi h\u1ea1n \u1edf m\u1ed9t qu\u1ed1c gia hay ch\u1ec9 trong khu v\u1ef1c.<\/p>\n\n\n\n
\u00d4 nhi\u1ec5m bi\u1ec3n kh\u00f4ng c\u00f3 bi\u00ean gi\u1edbi, nh\u1eefng \u00f4 nhi\u1ec5m kh\u00e1c c\u0169ng th\u1ebf. V\u00ed d\u1ee5 h\u00e0m l\u01b0\u1ee3ng kh\u00ed cacbonic trong kh\u00f4ng kh\u00ed kh\u00f4ng ng\u1eebng t\u0103ng l\u00ean g\u00e2y ra nhi\u1ec7t \u0111\u1ed9 to\u00e0n c\u1ea7u t\u0103ng cao; m\u1ed9t s\u1ed1 kh\u00ed ph\u1ebf th\u1ea3i c\u1ee7a ng\u00e0nh c\u00f4ng nghi\u1ec7p v\u00e0 giao th\u00f4ng hi\u1ec7n \u0111\u1ea1i th\u1ea3i ra, c\u00e1c m\u00e1y bay ph\u1ea3n l\u1ef1c bay tr\u00ean cao g\u00e2y n\u00ean s\u1ef1 ph\u00e1 ho\u1ea1i \u0111\u1ed1i v\u1edbi t\u1ea7ng \u00f4z\u00f4n; kh\u00f4ng kh\u00ed b\u1ecb \u00f4 nhi\u1ec5m khi\u1ebfn cho nhi\u1ec1u n\u01b0\u1edbc v\u00e0 nhi\u1ec1u v\u00f9ng tr\u00ean th\u1ebf gi\u1edbi b\u1ecb m\u01b0a axit; d\u00f9ng m\u1ed9t l\u01b0\u1ee3ng l\u1edbn thu\u1ed1c b\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt kh\u00f4ng nh\u1eefng ph\u00e1 ho\u1ea1i sinh th\u00e1i \u1edf nh\u1eefng khu v\u1ef1c s\u1eed d\u1ee5ng, th\u1eadm ch\u00ed \u1edf Nam C\u1ef1c c\u0169ng \u0111\u00e3 ph\u00e1t hi\u1ec7n th\u1ea5y ch\u1ea5t DDT. Nh\u1eefng s\u1ef1 th\u1eadt tr\u00ean \u0111\u00e2y ch\u1ee9ng t\u1ecf \u00f4 nhi\u1ec5m kh\u00f4ng c\u00f3 bi\u00ean gi\u1edbi qu\u1ed1c gia, n\u00f3 \u0111\u00e3 tr\u1edf th\u00e0nh v\u1ea5n \u0111\u1ec1 c\u00f3 t\u00ednh to\u00e0n c\u1ea7u, c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c m\u1ecdi ng\u01b0\u1eddi c\u00f9ng quan t\u00e2m v\u00e0 ch\u00fa \u00fd. Ch\u1ec9 d\u1ef1a v\u00e0o m\u1ed9t qu\u1ed1c gia ho\u1eb7c m\u1ed9t s\u1ed1 ng\u01b0\u1eddi n\u00e0o \u0111\u00f3 \u0111\u1ec3 ng\u0103n ch\u1eb7n \u00f4 nhi\u1ec5m l\u00e0 ho\u00e0n to\u00e0n kh\u00f4ng \u0111\u1ee7.<\/p>\n\n\n\n
T\u1eeb kho\u00e1 : \u00d4 nhi\u1ec5m.<\/p>\n","protected":false},"excerpt":{"rendered":"
Tr\u00ean Tr\u00e1i \u0110\u1ea5t m\u00e0 ch\u00fang ta sinh s\u1ed1ng t\u1eebng gi\u1edd, t\u1eebng ph\u00fat \u0111ang x\u1ea3y ra s\u1ef1 tu\u1ea7n ho\u00e0n v\u1eadt ch\u1ea5t v\u00e0 c\u00e1c d\u00f2ng ch\u1ea3y n\u0103ng l\u01b0\u1ee3ng. C\u00f3 nh\u1eefng c\u00e1i ta c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y, nh\u01b0ng c\u00f3 nh\u1eefng c\u00e1i kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c. V\u00ed d\u1ee5 th\u1ef1c v\u1eadt m\u00e0u xanh ti\u1ebfn h\u00e0nh quang h\u1ee3p, ch\u00fang h\u00fat […]<\/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":[15,17],"tags":[],"class_list":["post-9186","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-moi-truong"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9186","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=9186"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9186\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9186"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}