Evolution of group behavior | Evolution and natural selection | High school biology | Khan Academy

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Group behavior has evolved because membership can increase the chances of survival for individuals and their genetic relatives.

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Credits:

"Large fish school" by OpenStax College, licensed under a Creative Commons Attribution License (CC BY-SA 3.0):
https://commons.wikimedia.org/wiki/File:Large_fish_school.png
https://creativecommons.org/licenses/by-sa/3.0/deed.en

"The leading gnu" by Vincenzo Gianferrari Pini, licensed under a Creative Commons Attribution License (CC BY-SA 2.5 IT):
https://commons.wikimedia.org/wiki/File:The_leading_gnu.JPG
https://creativecommons.org/licenses/by-sa/2.5/it/deed.en

"Elephants are extremely protective of their young. At the sight of our jeep, adults surround the infants. Around 175 jee - Flickr - Al Jazeera English" by Al Jazeera English, licensed under a Creative Commons Attribution License (CC BY-SA 2.0):
https://commons.wikimedia.org/wiki/File:Elephants_are_extremely_protective_of_their_young._At_the_sight_of_our_jeep,_adults_surround_the_infants._Around_175_jee_-_Flickr_-_Al_Jazeera_English.jpg
https://creativecommons.org/licenses/by-sa/2.0/deed.en

"Canis lupus pack surrounding Bison" by Doug Smith [Public domain], via Wikimedia Commons:
https://commons.wikimedia.org/wiki/File:Canis_lupus_pack_surrounding_Bison.jpg
Category
Biology
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