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An ecosystem is a natural unit consisting of all plants, animals and micro-organisms (biotic factors) in an area functioning together with all of the physical (abiotic) factors of the environment. Ecosystems can be permanent or temporary. An ecosystem is a unit of interdependent organisms which share the same habitat. Ecosystems usually form a number of food webs. Ecosystem services are fundamental life-support services upon which human civilization depends and ...
Pollution is the introduction of contaminants into an environment that causes instability disorder harm or discomfort to the ecosystem i.e. physical systems or living organisms. Pollution can take the form of chemical substances or energy such as noise heat or light energy. Pollutants the elements of pollution can be foreign substances or energies or naturally occurring when naturally occurring they are considered contaminants when they exceed natural levels. ...