TheNaturalEnvironment.
        Definition:
             
	






	


             
             
	






             











             
        
        
        ComponentsandfeaturesoftheNaturalEnvironment:
        
                Component       Explanation                  Featuresexamples
                                                             
                Atmosphere      Thegaseousportionofour Wind,oxygen
                                planet–thelayerofair
                                thatcoversthespherical
                                surfaceoftheearth.
                                
                
                                                             
                Hydrosphere     Thewaterportionofthe     Lake,river,puddle,
                                planet.                      glacier
                                
                
                
                
                                                             
                Lithosphere     Thesolidportionofthe     Soil,rock,volcano
                                planet.
                                
                
                
                
                                                             
                Biosphere       Thelivingportionofthe    Bee,tree,frog,grass
                                earth
                                
                
                
                              
                                                   

        
                        TheNaturalEnvironment.
                            
                               
	
	


	

	

                                                  


	


	
	
                                     
                              
                                                  Atmosphere(gases)
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
                                             Biosphere
          (plantsandanimals)     
          
          
          
          
          
          
          
          
          
          
          
          
          
          
          
                          Lithosphere(land)                                        Hydrosphere(water)
          
          
                                                                   
          
    
    
    
               
     





                          
       	

              

              
              
	
                    
    Anisanaturalunitconsistingofallplants,animalsandmicroorganisms(bioticfactors)
                          inanareafunctioningtogetherwithallofthenonlivingphysical(abiotic)factorsoftheenvironment.
                          Anecosystemisacompletelyindependentunitofinterdependentorganismswhichsharethesame
                          habitat.Ecosystemsusuallyformanumberoffoodwebswhichshowtheinterdependenceofthe
                          organismswithintheecosystem.
                          http://en.wikipedia.org/wiki/Ecosystems
                          
                    
    Anecosystemconsistsofadynamicsetoflivingorganisms(plants,animals,andmicroorganisms)
                          allinteractingamongthemselvesandwiththeenvironmentinwhichtheylive.
                          Anecosystemdoesnothavepreciseboundaries–itcanbeassmallasapondoradeadtree,oras
                          largeastheEarthitself.Anecosystemcanalsobedefinedintermsofitsvegetation,animalspecies,
                          ortypeofrelief.Themajorecosystemsaregenerallydescribedas:
                                     aquaticecosystems–saltwaterorfreshwaterecosystems
                                     terrestrialecosystems–forests,prairies,deserts,etc.
              	







              
              
                    
    asystemformedbytheinteractionofacommunityoforganismswiththeirphysicalenvironment
                          wordnet.princeton.edu/perl/webwn
              
              
                    
    Alivingsystemwhichconsiderstheinteractionsbetweenliving(plantsandanimals)andnonliving
                          components(water,land,air,chemicals)ofanareaoranenvironment.
              
              
                    
    Anindependentcommunityoflivingorganismsinteractingwiththeirphysicalenvironment.