Ecosystems

An ecosystem it is a community or group of living organisms that live in and interact with other in a specific environment. For instance,tropical forests are ecosystem made up of living being such as trees,plants,animals,insects and micro-organisms that are in constant interaction between themselves and that are affected by other physical (sun,temperature) or chemical (oxygen or nutrients)components Together with freshwater ecosystems,marine ecosystems are also part of the broader category of aquatic ecosystems.     
                                                                        Marine ecosystems cover more than 70% of the earth's surface and have a high salt content. Some examples of marine ecosystems are offshore 

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