If the population of ocean sunfish increased then there would be more energy for sea lions and killer whales to obtain, allowing for more reproduction, which would cause an increase in the population. On the other hand, the jellyfish population would decrease since more energy storage molecules would be needed from the population, causing more deaths than births. These are all examples of direct effects since all of them directly affect one another. Even though sea turtles and hermit crabs are necessarily connected to sea turtles and hermit crabs, they would still be affected. If the ocean sunfish population increased, there would be much more jellyfish eaten by that one specific group of organisms, and less for the other two populations. This would reduce reproduction rates in those populations since they don’t have enough energy to reproduce. This would cause a decrease in both of these populations, since there would be less births than deaths. The zooplankton population would also increase since there would be less jellyfish that would consume them, which would cause more births than
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