Evolution | Middle school biology | Khan Academy скачать в хорошем качестве

Evolution | Middle school biology | Khan Academy

https://www.khanacademy.org/science/m... Evolution is the change in heritable traits that occurs in a group of organisms over multiple generations. Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate Volunteer here: https://www.khanacademy.org/contribute Credits: “Composite image showing the diversity of birds” by Klow (CC BY-SA 3.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “Bald Eagle (Haliaeetus leucocephalus) Kachemak Bay, Alaska” by Andy Morffew (CC BY 2.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “A Congo African Grey Parrot in Herborn Bird Park, Germany” by Quartl (CC BY-SA 3.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “Costa's hummingbird by Pete Gregoire” by Pete Gregoire (CC BY 2.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “A mallard duck stood up from its nap on a log at Riverwood Farms Lake” by Jeremy Bishop, via Unsplash: https://unsplash.com/photos/Mdkrvid9l8s “Adeliepinguin (Pygoscelis adeliae), fotografiert auf der chilenischen Antarktisstation Eduardo Frei auf King Georges Island” by Nanosmile / Reinhard Jahn (CC BY-SA 2.0 DE), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “A photo quilt composed of bird photos taken on National Wildlife Refuges in Region 6, Mountain Prairie Region, USFWS” by Tom Koerner/USFWS [Public domain], via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “Dancing peacock” by Montasim Jawar (CC BY-SA 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “Bald eagle talons” by Tim Evanson (CC BY-SA 2.0), via Flickr: https://www.flickr.com/photos/2316529... “Gräsand, Mallard, Anas platyrhynchos” by Bengt Nyman (CC BY-SA 2.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “Wisdom Returns to Midway” by USFWS [Public domain], via Flickr: https://www.flickr.com/photos/usfwspa... “Wisdom's 2011 chick, marked with band number N333” by Dan Rapp/USFWS, via ACAP: https://www.acap.aq/latest-news/4283-... “A feral pigeon about to land” by Claudio Gennari (CC BY 2.0), via Flickr: https://www.flickr.com/photos/2739116... “Close-up of the head of a feral pigeon (Columba livia) in Parc Georges-Valbon, France” by Alexis Lours (CC BY 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “Columba livia, Roncone (Sella Giudiarie, Trentino, Italy)” by Syrio (CC BY-SA 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “A feral rock pigeon (Columba livia), taken in Santa Barbara, California, USA” by Dori (CC BY-SA 3.0 US), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “Saint Pio of Pietrelcina Chapel Bagumbayan, Quezon City” by Judgefloro (CC0 1.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “Feral pigeon (Columba livia) in Parc Georges-Valbon, France” by Alexis Lours (CC BY 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “Hill Pigeon (Columba rupestris)” by Imran Shah (CC BY-SA 2.0), via Flickr: https://www.flickr.com/photos/6846617... “Animal diversity October 2007” by Justin (CC BY-SA 3.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “Corythoraptor life restoration” by Zhao Chuang (CC BY 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi... “Terrestrial Dorygnathus” by Mark P. Witton (CC BY 4.0), via Wikimedia Commons: https://commons.wikimedia.org/wiki/Fi...