The ecosystem“ means a dynamic complex of plant, animal and micro-organism communities and their non-living environment interacting as a functional unit that is restricted in time and space and includes:

1 Living Components of plant and animal organisms that are part of the biological diversity.

2 Non-Living Components: of organic and inorganic materials and physical factors (climate, humidity, temperature, wind, …..) which are called the physical chemical environment.

The components of the ecosystem are interlinked to each other by close interrelationships, which cannot be separated from any elements into their chain.