Nature and Structure of Community
Every place on earth -grasslands, forests, and ponds, edge of the river or sea is shared by many coexisting organisms. Plants, animals and microorganisms which occur together are related to one another by their feeding relationships and many other interactions, forming a complex whole, generally referred to as a biological community.
Interrelationships between the organisms in a community determine several functional attributes of the ecosystem such as: flow of energy and cycling of elements.