Answer: Increased predation
Step-by-step explanation:
A biotic factor can be define as a living being of the ecosystem which interacts with the non-living physical environment. Predation is an ecological interaction among the distinct species in an ecosystem. In this one organism kills the other in order to obtain it as food. The organism which is killed is called as prey.
The increased predation can be considered as biotic because of the fact that it involves the interaction of the living beings in the marine environment.