Why don’t poisonous animals poison themselves? – Rebecca D. Tarvin

Have you checked out our Patreon page? ❤️情人节美甲💅教程#20nails://www.patreon.com/teded

查看完整课程: ❤️情人节美甲💅教程#20nails://ed.ted.com/lessons/why-don-t-poisonous-animals-poison-themselves-rebecca-d-tarvin

Thousands of animal species use toxic chemicals to defend themselves from predators. Snakes have blood clotting compounds in their fangs, the bombardier beetle has corrosive liquid in its abdomen and jellyfish have venomous, harpoon-like structures in their tentacles. But how do these animals survive their own poisons? Rebecca D. Tarvin details the strategies that protect animals from themselves.

Lesson by Rebecca D. Tarvin, animation by Giulia Martinelli.

非常感谢我们的顾客对我们的支持! 没有你，这个视频是不可能的! 乔丹·唐, 克里斯托弗·希门尼斯, 胡安, 特蕾西·托布金, 席德, 艾米莉林, 凯瑟琳·J·哈蒙德, 艾略特·普林, 圣诞原地, Oyuntsengel Tseyen-Oidov, 拉托拉·斯莱德尔, 悉尼埃文斯, 维克多·E·卡赫尔, Bernardo Paulo, Eysteinn Guðnason, 安德里亚快乐, 娜塔莉·里科, 乔什·恩格尔, 芭芭拉·纳扎雷, Gustavo Mendoza, Zhexi Shan, Hugo Legorreta, PnDAA , 桑德拉·特斯鲁森, 艾伦·斯佩图斯, 法比安·阿梅尔斯, 吴三美, 马蒂亚·维特里, 昆汀·勒梅内斯, 斋藤裕, Joris Debonnet, 希瑟·斯莱特, Dr Luca Carpinelli, Janie Jackson, Christophe Dessalles, Arturo De Leon, Eduardo Briceño, Bill Feaver, Ricardo Paredes, David Douglass, Grant Albert, Paul Coupe, Jen, Megan Whiteleather, and Mayank Kaul.