GCSE Biology Revision "Sampling Organisms"

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In this video, we look at how to sample the numbers of organisms in an area using random sampling and sampling along a transect.
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Image credits:
Blackbird By © Francis C. Franklin / CC-BY-SA-3.0, CC BY-SA 3.0, commons.wikime...
Quadrat By Yohan euan o4 - Own work, CC BY-SA 3.0, commons.wikime...
Dandelion "commons.wikime...
I, Tony Wills [CC BY 2.5 (creativecommon...) or CC BY-SA 3.0 (creativecommon...)], from Wikimedia Commons"
Daisy "commons.wikime...
By André Karwath aka Aka [CC BY-SA 2.5 (creativecommon...)], from Wikimedia Commons"
Fern "commons.wikime...
By Steve Parker (originally posted to Flickr as Tree Fern) [CC BY 2.0 (creativecommon...)], via Wikimedia Commons"
Field of daisies "By Eneufeld at the English Wikipedia, CC BY-SA 3.0, commons.wikime..."