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Nhờ ANh em giúp đỡ hộ dịch hộ em bài này sao cho ngắn chút
Nh??? ANh em gi??p ????? h??? d???ch h??? em b??i n??y sao cho ng???n ch??t
L??m th??? n??o ????? gi???i quy???t v???n ????? kh?? h???n, s??? b??ng n??? d??n s??? v?? n???n khan hi???m n??ng l?????ng? C??c nh?? khoa h???c qu???c t??? ???? ngh?? ?????n 5 d??? ??n sau ????y.
X??y d???ng m???t t??a nh?? kh???ng l???
T??? nay ?????n n??m 2050, d??n s??? th??? gi???i s??? t??ng 50%. Qu??? ?????t ch??ng ta l??m sao c?? ????? ch??? ????? ng?????i d??n chen ch??n?
Nh???ng ng?????i l??nh ?????o t???p ??o??n Taisei (Nh???t B???n) ???? ????a ra m???t ?? ngh?? r???t ?????c ????o ????? gi???i quy???t v???n ????? n??y: X??y d???ng m???t t??a nh?? to b???ng qu??? n??i! T??a nh?? n??y cao 4 c??y s???. ????y c???a t??a nh?? c?? ???????ng k??nh 6,5 km v?? th??nh ph??? ?????ng n??y c?? th??? ch???a 1,6 tri???u ng?????i. R???t nhi???u k??? s?? s??? ph???i b???t t??c, v?? tai tr?????c khi t??a nh?? ???????c d???ng l??n tr??n h??nh tinh ch??ng ta.
Thu n??ng l?????ng m???t tr???i t??? kh??ng gian
L??m sao t??m ra c??c ngu???n n??ng l?????ng kh??c khi nh???ng m??? d???u h???a s??? c???n ki???t? Ch???c ch???n ph???i t??m m???t ph???n l???i gi???i ????p ??? n??ng l?????ng m???t tr???i. Ng?????i ta c?? th??? thu n??ng l?????ng n??y qua c??c tr???m v?? tr??? ???????c trang b??? nh???ng t???m pan?? m???t tr???i r???t l???n. Nh???ng tr???m ???y ho???t ?????ng b??n tr??n c??c ????m m??y bao quanh tr??i ?????t n??n thu ???????c nhi???u n??ng l?????ng m???t tr???i h??n c??c tr???m x??y d???ng d?????i tr??i ?????t.
Th??ng qua m???t d??y tr???i v?? d?????i d???ng s??ng vi ba, tr???m v?? tr??? n??i tr??n c?? th??? chuy???n n??ng l?????ng thu ???????c h??nh tinh ch??ng ta. NASA (C?? quan H??ng kh??ng v?? tr??? M???) ???? ???p ??? ?? ki???n n??y h??n 30 n??m nay v?? c??c chuy??n gia h??ng kh??ng v?? tr??? Nh???t v???a n??u tr??? l???i. Nh???t d??? ?????nh s??? ph??ng m???t tr???m v?? tr??? thu n??ng l?????ng m???t tr???i tr?????c n??m 2040.
L??m m???c c??c c??y c???u
Roelof Schuiling, nh?? ?????a h??a h???c H?? Lan, ???? ????a ra m???t k??? thu???t cho ph??p ???? sinh tr?????ng nh?? m???t c??y xanh. Cho phun axit sunfuric v??o c??c l??? ????o trong ?????t ???? v??i, ??ng kh???ng ?????nh c?? th??? l??m cho ???? t??ng dung l?????ng, c??ng ph???ng l??n v?? t???o th??nh m???t c??y c???u th???c s???. Schuiling d??? ?????nh k??ch th??ch d???i ???? v??i cho ?????n khi n?? tr???i l??n m???t n?????c v?? l??m th??nh m???t m???t ???????ng m?? xe c???, t??u l???a c?? th??? l??n b??nh tr??n ????. Con ???????ng n??y c?? th??? ???????c trang b??? m???t lo???t tu???c-bin ch???y b???ng n?????c v?? gi??. V?? nh?? v???y, l???i c?? th??m n??ng l?????ng ????? cung c???p cho c??? m???t th??nh ph???.
M??c n?????c trong kh??ng kh??
Ng?????i ta g???i n?????c l?? v??ng xanh. Qu??? th???t ????ng nh?? v???y, t???i m???t s??? n??i tr??n tr??i ?????t ch??ng ta, ??? ???? ng?????i ta ??ang thi???u n?????c tr???m tr???ng. ?? t?????ng l???y n?????c t??? s????ng ???????c h??nh th??nh. Ngay c??? ??? nh???ng n??i m?? tr???i ch???ng m??a bao gi??? th?? ??? ?????y, trong kh?? quy???n v???n c?? h??i n?????c. C??c nh?? khoa h???c g???i ?? bi???n h??i n?????c ???y th??nh ch???t l???ng nh??? v??o nh???ng c??i t??? s????ng.
T??? ch???c s??? d???ng s????ng (Opur) ???? ????a ra s??ng ki???n l??m nh???ng t???m pan?? r???ng b???c m??ng ch???t d???o c?? ?????c t??nh l??m l???nh nhanh ch??ng. V???t li???u n??y c?? kh??? n??ng h??? nhi???t ????? xu???ng d?????i nhi???t ????? m?? c??c ph??n t??? n?????c chuy???n t??? th??? kh?? sang th??? l???ng v?? nh?? v???y, cho ph??p h??i n?????c ????ng l???i th??nh nh???ng gi???t nh???. Nh???ng thi???t b??? t????ng t??? ???? ???????c th??? nghi???m ??? nhi???u khu v???c kh?? h???n t??? Bangladesh sang Ethiopia, ngang qua Israel v?? s???p t???i c??ng s??? ???????c th??? nghi???m ??? ???n ?????.
L??m cho sa m???c tr??? n??n m??u m???
??ng Gordon Sato ho??n to??n tin t?????ng c?? th??? bi???n sa m???c tr??? th??nh ?????t ??ai m??u m???. Nh?? sinh v???t h???c ng?????i M??? n??y ???? nh???n bi???n ?????i m???t v??ng ??? ch??u Phi b??? h???n h??n th??nh nh???ng ?????ng ru???ng c?? th??? tr???ng tr???t ???????c. ???? l?? b??? bi???n c???a ??rythr??e, tr??n H???ng H???i.
Trong khu??n kh??? d??? ??n Manzanar, ??ng ???? cho tr???ng kho???ng m???t tri???u c??y ???????c, v???t trong b???y n??m. V?? nh?? khoa h???c n??y hy v???ng c?? th??? t???o ra m???t r???ng s?? v???t th???c s???. Hay n??i c??ch kh??c, m???t v??ng th???c b?? n???m gi???a ?????t li???n v?? bi???n mang l???i nhi???u l???i ??ch cho d??n ?????a ph????ng.
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Honda DYLAN125
Last edited by manutd4892; 01-20-2011 at 09:09 AM .
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