GCSE Biology - Food Chains & Predator Prey Cycles #85

The video explains how energy flows through ecosystems using food chains, starting with producers like plants that convert solar energy into biomass. It describes the roles of primary, secondary, and tertiary consumers and highlights energy loss at each level. The concept of predator-prey cycles is introduced, showing how populations of predators and prey fluctuate over time due to their interactions.

What is a predator-prey cycle and how does it affect population dynamics?

Discuss the reasons why predator and prey populations fluctuate over time.