GCSE Biology Revision "Speciation" (Triple)

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In this video, we look at how new species develop due to geographical barriers. We also explore the work of Alfred Russel Wallace.

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Image credits:

Darwin By George Richmond - From Origins, Richard Leakey and Roger Lewin, Public Domain, https://commons.wikimedia.org/w/index...

Origin of species "https://commons.wikimedia.org/wiki/Fi...

See page for author [Public domain], via Wikimedia Commons"

Alfred Russel Wallace By User Tagishsimon on en.wikipedia - Originally from en.wikipedia; description page is (was) here02:17, 13 January 2005 Tagishsimon 298x472 (18,609 bytes), Public Domain, https://commons.wikimedia.org/w/index...

Korreldragende-gifkikker-3 By Patrick Gijsbers - http://www.allemaal-beestjes.nl/cpg14..., GFDL, https://commons.wikimedia.org/w/index...

Darwin 1855 By Maull and Polyblank - The Complete Work of Charles Darwin Online, Public Domain, https://commons.wikimedia.org/w/index...

Amazon Monkey "https://commons.wikimedia.org/wiki/Fi...

By Murray Foubister [CC BY-SA 2.0 (https://creativecommons.org/licenses/...)], via Wikimedia Commons"

Snail By Jürgen Schoner - Originally uploaded on the German Wikipedia as "Weinbergschnecke 01.jpg". Own work of Jürgen Schoner., CC BY-SA 3.0, https://commons.wikimedia.org/w/index...

Music credit:

Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/...)
Source: http://incompetech.com/music/royalty-...
Artist: http://incompetech.com/