Explain any three roles of 'predation' in an ecosystem with the help of suitable examples.

– Conduit of energy in the ecosystem. Example: Grass-Goat- Lion / Lion (Predator) transfer the energy fixed by plants in the ecosystem – Maintain species diversity of prey by reducing intensity of competition. Example: Extinction of more than $\displaystyle 10$ species of invertebrates due to removal of starfish Pisaster (Predator) –Keep the population of prey under control Example: Cactus feeding Moth (predator)controls the spreading of prickly pear cactus.