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[冷知识]若氧气含量从21%变成90%，地球上会发生什么？
若氧气含量从21%变成90%，地球上会发生什么？
科普冷知识68/128
App02:08![[冷知识]若氧气含量从21%变成90%，地球上会发生什么？](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/ooAfAfXrDBDMFAaAP0Ecj0IheEGQC8bAu8jGkA~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250508041723D60C2D09DCA18D05FBEF&requestFrom=704&version_code=80402&x-expires=1778185044&x-signature=sItxrF3orEKhxCFKFzyjXq9v7Fk%3D)
App02:25![[冷知识]有哪些很相似的动物，但却存在生殖隔离？](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/oQIjiAZOBNA46W6znsgJEAiIAbwPVSYEAoBCw~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250508041723D60C2D09DCA18D05FBEF&requestFrom=704&version_code=80402&x-expires=1778185044&x-signature=QOdbhaAehFzhYG87cOqyrAiJ7iw%3D)
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