GCSE Biology - Food Chains & Predator-Prey Cycles

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*** WHAT'S COVERED ***
1. Understanding Food Chains
* How food chains illustrate energy flow in an ecosystem.
* Roles of producers, primary, secondary, and tertiary consumers.
* Biomass creation by producers.
* Energy transfer and loss across trophic levels.
* Meaning of arrows in food chain diagrams.
2. Exploring Predator-Prey Cycles
* Dynamic relationship between predator and prey populations.
* Cyclical fluctuations in predator and prey numbers.
* 'Out of phase' relationship and predator population lag.
* Sequence of events driving population cycles.
* Factors for time lags in population responses.

*** CHAPTERS ***
0:00 Introduction
0:20 What are Food Chains?
2:04 Energy Loss in Food Chains
2:41 Predator-Prey Cycles
4:40 Time Lag in Predator-Prey Cycles

*** PLAYLISTS ***






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