Predation makes organism with in an ecosystem resilient to deadly attacks and danger and hence enable them to survive.
Explanation:
Making a system resilient means making it effective enough to sustain any disturbances or variation.
When in an ecosystem , one organism starts praying on other organism then the weaker organism starts evolving itself through natural selection process in a way that its new generation is able enough to save itself from the predator.
Hence, in way around predation makes organism with in an ecosystem resilient to attacks and danger.