Biotic Factors in Ecosystems

What happens if you change the living factors of an ecosystem? Discover the effect of removing predators or introducing a new species into a habitat. Biology - Ecosystems - Learning Points. The smallest change can tip the balance of the whole ecosystem. Biotic factors are living factors. The removal of a species can collapse the food chain. The introduction of a new species can bring disease and parasites. A Twig Context Film. Reinforce and extend the learning required by the curriculum. Twig’s context films show abstract concepts in action in the real world.