2. zooplankton, sardine, penguin food chain Increase. The smaller penguin population will need fewer energy storage molecules, so they will eat fewer sardines. This will lead to fewer deaths than births in the sardine population

Increase., The smaller penguin population will need fewer energy storage molecules, so they will eat fewer sardines. This will lead to fewer deaths than births in the sardine population

Decrease. A decrease in one population always causes a decrease in the sizes of all other populations in the ecosystem.

Decrease, . A decrease in one population always causes a decrease in the sizes of all other populations in the ecosystem.

Increase. The smaller penguin population will leave more energy storage molecules available for the sardine population to reproduce more. This will lead to more births in the sardine population.

Increase., The smaller penguin population will leave more energy storage molecules available for the sardine population to reproduce more. This will lead to more births in the sardine population.

Decrease. The size of its resource population decreased, so the amount of energy storage molecules available for the sardines decreased. There will be less births than deaths in the sardine population.