GCSE Biology - Pyramids of Biomass

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*** WHAT'S COVERED ***
1. Pyramids of Biomass.
* What they represent & how they are structured.
2. Biomass Transfer Between Trophic Levels.
* The 10% rule.
3. Reasons for Biomass Loss.
4. Calculating Efficiency of Biomass Transfer.

*** EXAM BOARD INFO ***
AQA - Separate/triple science only
IGCSE Edexcel - Everything is relevant to your course! But you also need to know about pyramids of number and energy, which are very similar.
Edexcel - Separate/triple science only
OCR 21st Century - Separate/triple science only
OCR Gateway - Separate/triple science only

*** CHAPTERS ***
0:00 Intro & Definition of Pyramids of Biomass
0:15 Food Chain Example
0:31 What is Biomass?
0:57 Decreasing Biomass in Pyramids
1:25 Why Biomass Decreases (~10% Rule)
2:03 Reasons for Biomass Loss
3:20 Calculating Efficiency of Biomass Transfer

*** PLAYLISTS ***










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