Tuesday, May 29, 2012

Ecosystem



  The Ecosystem :
       An “Ecosystem” is a living community of plants and animals sharing an environment with non-living elements such as climate and soil.



                               Ecosystem


      Ecosystem exist on a variety of scales. An example of a small scale ecosystem (micro) is a pond.



                                                                                            
       

            Image 0f Pond Ecosystem
           
      A medium scale ecosystem (messo) could be a forest.




     


              Image of forest Ecosystems


        The Tropical rainforest is an example of a very large Ecosystem (boome)





   Image of Tropical Rainforest Ecosystem.

      Sunlight is the main source of energy. This allows plants to convert energy by photosynthesis. This provides food for some animals, birds and fish. These are called “Herbivores”.
    

           
        
            Image of Herbivores Animals.

     The other animals eat the animals that have eaten the plants. These are "Carnivores".



             Image of Carnivores Animals  

  
      This process is called “FOOD CHAIN”.







        Image of Food Chain of Pond Ecosystem
                    


            

          Image of Food Chain of Forest Ecosystem



            
 Image of  A Food Chain Of Tropical Rain Forest

         The world has many different ecosystems. Each one has its own climate, soil, plants and animals. Very few Ecosystems are natural today. Because of human activities. More Ecosystems are under threat than ever before and need protecting.