Explain aquarium as an ecosystem.

Explanation

The electric bulb in an aquarium provides light energy for the plants to produce food. The carbon dioxide required for photosynthesis is provided by fishes during respiration. The oxygen released by the plants is utilized by the fishes for respiration. The excretory matter of fishes for respiration. The excretory matter of fishes provides nutrition for the plants. Sand provides habitat for plants. The bacteria present in te sand act as decomposers to break down the dead remains if any. Thus, an aquarium is like a mini pound ecosystem.