GCSE Biology Revision “Pyramids of Biomass” (Triple)

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In this video, we look at pyramids of biomass. We explore why biomass always decreases moving from one trophic level to the next. We then learn how to calculate the efficiency of biomass transfer.

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Image credits:

Cows https://commons.wikimedia.org/wiki/File:Sortbroget_dansk_malkerace.jpg

Oak Tree “https://commons.wikimedia.org/wiki/File:Keeler_Oak_Tree_-_distance_photo,_May_2013.jpg

Msact at English Wikipedia [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)], from Wikimedia Commons”

Caterpillar “https://commons.wikimedia.org/wiki/File:Anisota_senatoria.jpg

By Greg Dwyer [CC BY-SA 2.5 (https://creativecommons.org/licenses/by-sa/2.5)], from Wikimedia Commons”

Sparrow By Fir0002 – Own work, GFDL 1.2, https://commons.wikimedia.org/w/index.php?curid=7202303

Sparrowhawk By Meneer Zjeroen – https://www.flickr.com/photos/nuskyn/4028311597/, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=8528830

Music credit:

Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/?keywords=deliberate+thought
Artist: http://incompetech.com/