Question

Light, water, dissolved oxygen, plants and fishes are part of an aquarium as shown in the above picture. They are in perfect equilibrium. This is an example of ___.

Answer 1

An ecosystem consists of biotic components(e.g. plants, animals, insects) and abiotic components (e.g. light, air, temperature, soil etc.). An ecosystem can be as small as a drop of water and as big as a forest.