Question

explain the structure of an aquatic ecosystems between the pond and the aquarium. which of the two is a self - sustaining ecosystems?​

Answer 1

Answer:

A pond is said to be a self sustaining unit because it is a natural ecosystem. The abiotic and biotic components of a pondare not regulated bu human beings and it has all the tropic levels. An aquarium is a man-made ecosystem because humans control the type of organisms, amount of light, water etc.