Write notes on the structure and functioning of an ecosystem.

Explanation

.An ecosystem. is a functional unit of nature, where living organisms interact among themselves and also with the surrounding physical environment. Ecosystem varies greatly in size from a small pond Littoral to a large forest or a sea. Many ecologists regard the entire biosphere as a global ecosystem as composite Profunda] of all local ecosystems on Earth. Since this system is zone too big and complex to be studied at one time it. Lake ecosystem is convenient to divide it into two basic categories, namely natural and artificial. The natural eco-systems include aquatic ecosystems of water and terrestrial ecosystems of the land. Both types of natural and artificial ecosystems have several sub divisions.
The Natural Ecosystem : These are naturally occurring ecosystems and there is no role of humans in the formation of such types of ecosystems. These are categorized mainly into two types - aquatic and terrestrial ecosystems. These are man-made ecosystems such as agricultural or agro - ecosystems. They include cropland ecosystems, aquaculture ponds and aquaria.