Uploaded August 2023 | Updated September 2026, 1 day ago

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You can find all my A Level Biology videos fully indexed at freesciencelessons.co.uk/a-level-revision-videos/a-level-biology

In this video, we look at the factors affecting biodiversity. These include modern farming methods, deforestation and climate change.

Image credits:

Woodland
commons.wikimedia.org/wiki/File:Open_Woodland_in_Illinois_United_States.jpg
Quadriflora77, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Polar bear with cub
commons.wikimedia.org/wiki/File:Female_polar_bear_(Ursus_maritimus)_with_cub,_Svalbard.jpg
AWeith, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Coral
commons.wikimedia.org/wiki/File:Coral_Outcrop_Flynn_Reef.jpg
upload.wikimedia.org/wikipedia/commons/2/2e/Coral_Outcrop_Flynn_Reef.jpg

Crowded train station
commons.wikimedia.org/wiki/File:Platform_of_Blue_Line_in_Zhongxiao_Fuxing_Station_2011.JPG
Howard61313, Public domain, via Wikimedia Commons

Farming in the Amazon
commons.wikimedia.org/wiki/File:Farming_in_the_Amazon_-_panoramio.jpg
Sam Beebe/Ecotrust, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Wheat field
commons.wikimedia.org/wiki/File:Wheat_field_in_Worcestershire.jpg
InterstellarGamer12321, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Housing
commons.wikimedia.org/wiki/File:Bolsover_housing_estate_-_geograph.org.uk_-_3279819.jpg
Bolsover housing estate by Andrew Hill, CC BY-SA 2.0 creativecommons.org/licenses/by-sa/2.0, via Wikimedia Commons

Coal-fired power station
commons.wikimedia.org/wiki/File:Turow_Power_Station.jpg
Vondraussen, CC BY 3.0 creativecommons.org/licenses/by/3.0, via Wikimedia Commons

Herd of cows
commons.wikimedia.org/wiki/File:Herd_of_cows_in_a_field_near_Chadwell_-_geograph.org.uk_-_3868864.jpg
Herd of cows in a field near Chadwell by Mat Fascione, CC BY-SA 2.0 creativecommons.org/licenses/by-sa/2.0, via Wikimedia Commons

Grass fly
commons.wikimedia.org/wiki/File:Grass_Fly._Chlorops_species_(36085582651).jpg
gailhampshire from Cradley, Malvern, U.K, CC BY 2.0 creativecommons.org/licenses/by/2.0, via Wikimedia Commons

Fool's parsley
commons.wikimedia.org/wiki/File:Aethusa_cynapium_002.JPG
H. Zell, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons

Hedgerow
commons.wikimedia.org/wiki/File:Hedgerow_-_geograph.org.uk_-_4715173.jpg
Hedgerow by Nigel Mykura, CC BY-SA 2.0 creativecommons.org/licenses/by-sa/2.0, via Wikimedia Commons

Logging
commons.wikimedia.org/wiki/File:Tawau-District_Sabah_Logging-Camp-10.jpg
Photo by CEphoto, Uwe Aranas

Burning
commons.wikimedia.org/wiki/File:Lacanja_burn.JPG
Jami Dwyer, Public domain, via Wikimedia Commons

Melting ice
commons.wikimedia.org/wiki/File:Warming_Seas_and_Melting_Ice_Sheets_(20280818003).jpg
NASA Goddard Space Flight Center from Greenbelt, MD, USA, Public domain, via Wikimedia Commons

Flooding
commons.wikimedia.org/wiki/File:Flooded_Pastures_in_Northeastern_Novato.jpg
AnonymousEditor95, CC BY-SA 4.0 creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons

Where the river ends
commons.wikimedia.org/wiki/File:Where_the_river_ends.jpg
Gemma Burgazzi, CC BY 4.0 creativecommons.org/licenses/by/4.0, via Wikimedia Commons

Bee
commons.wikimedia.org/wiki/File:Bee_Collecting_Pollen_2004-08-14.jpg
Jon Sullivan, Public domain, via Wikimedia Commons