Vì sao cá chết lại nổi?
Các loài vật khác khi chết dưới nước thường chìm, riêng cá lại nhanh chóng nổi lên mặt nước. Một cơ chế hoá học đặc biệt đã khiến chúng như vậy.
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kcO1w7Thu67hu4194bqn4buuXeG6q+G6p+G7ruG7g+G7rsOtaOG6reG6p8Og4buuW+G6reG6p8Og4buuW+G6qeG6p8Og4buuXWoj4buu4bqn4bqpVeG7ruG6psOg4bqtJOG6o+G7rmgjVOG7rmfDrD3hu67DrWjEg+G6p+G6oeG7rmbhuqEo4bqn4buu4bqhw6zhu5Xhu67DtT1d4buuaeG6o+G6p+G6oeG7rmgj4buuw63huqE14bql4buuXT1d4buuw6Lhuq0l4bqj4buu4bq14bqhw6Phu67hurXhuqE9XeG7ruG6peG6v+G6o1Xhu67hu6zhu6vhuq3huqfhu65dPeG7rsOg4bqjZeG6p8Og4buu4bqn4bqhbOG7ruG6peG6ucOt4buuXT3huqPhu67huqHhurlm4buu4bq1w6PhuqdU4buu4bq14bqh4bqj4buu4bqn4bqp4buuZuG6oSjhuqfhu67huqHDrOG7lVThu67hurXhuqHDo+G7rmk04buuw6IpZuG7riA8w7Thu65dw6rhu67DreG6oTnhu6xU4buu4bup4bqtaOG6ozDhurXhu67huqfhuqnhuqNV4bumZsWo4bur4bqhLuG6p8Og4buu4bqlKcO04buuXeG6oWVdVOG7rl094bqj4buuW8Sp4bqnw6Dhu67DrWjhu4Phu67DreG6oSThuqfhuqHhu67huqXhurnDreG7rmfDrCrhu67hurXhuqHhuqPhuqfhuqHhu67hurXhuqHDo+G7rl08w6zhu67hu40k4buuXeG6reG6p+G7rl094buu4bqn4bq74bqj4buuw6I14bqn4buu4bqlLMOt4buu4bqnbOG6v11V4buu4burPeG7ruG6pyzhuqfDoOG7ruG6oTzDrOG7ruG6oTbDreG7rsOiJOG7riLhuq3hu67DtWzDquG6p8Og4buu4buNJOG7rl3DquG7ruG7g+G7ruG6oSPhuqPhu65bNeG6p+G7rmll4bqnw6Dhu67DomzhuqfDoFThu67hu43Eg+G7rsOt4bqhNuG7ruG6teG6oeG6o+G7rmfDrCrhu67hurXhuqHDo+G7rl08w6zhu67huqfDoOG6reG6o+G7rsOiNeG6p1Thu65d4bqt4bqn4buuXT3hu65d4bqp4buuw7XDrOG7ruG6oWzhur/huqfDoOG7riDhurvhu67huqfDoOG6oeG6ozXhuqfDoOG7rmkj4bqnw6Dhu67huqXhurnDreG7rls14bqnVeG7pmbFqOG6tOG6ocSR4bqnw6Dhu65m4bqhKuG6o+G7rsOi4buLXeG7ruG6pyThuq3hu65dPeG7rl3huqE2w63hu65da+G6p8Og4buu4bqn4bq74bqj4buuw6I14bqn4buu4bqlLMOt4buu4bqnbOG6v13hu67huqfDoCPDtFXhu67hu6vhuqHhu4vhuqfDoOG7rl3huqnhu67DreG6oTnhu67huqc74bql4buu4buD4buuImzhur/huqPhu64gPcO04buuXeG6oeG6reG7riA24bqn4buu4bq14bqh4bqj4buu4bq14bqhw6Phu67DrcOjXeG6oeG7riA8w7Thu65dw6rhu67DreG6oTlV4buuw43huqEw4bqt4buuw43huqPhuqfhu67huqbhuqEj4bqn4bqh