কনভেনশনটি ৫ জুন ১৯৯২ তারিখে রিও ডি জেনিরোতে আর্থ সামিটে স্বাক্ষরের জন্য খোলা হয়েছিল এবং ২৯ ডিসেম্বর ১৯৯৩ সালে কার্যকর হয়। মার্কিন যুক্তরাষ্ট্রই একমাত্র জাতিসংঘের সদস্য রাষ্ট্র যারা এই কনভেনশনটি অনুমোদন করেনি। এর দুটি সম্পূরক চুক্তি রয়েছে, কার্টাগেনা প্রটোকল এবং নাগোয়া প্রোটোকল ।
আমাদের অল-ইন-ওয়ান মোবাইল অ্যাপের মাধ্যমে সীমাহীন শেখার সুযোগ উপভোগ করুন।
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select `id`, `name`, `slug`, `parent_id`, `_lft`, `_rgt` from `subjects` where (19482 between `subjects`.`_lft` and `subjects`.`_rgt` and `subjects`.`id` <> 16932) and `subjects`.`deleted_at` is null order by `_lft` asc
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select * from `subjects` where `subjects`.`id` = 16932 and `subjects`.`deleted_at` is null limit 1
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select `_lft`, `_rgt` from `subjects` where `id` = 79 limit 1
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select `id`, `name`, `parent_id`, `_lft`, `_rgt`, `name`, `slug`, `icon`, `banner` from `subjects` where (`subjects`.`_lft` between 16791 and 20416) and `subjects`.`deleted_at` is null
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