Levels of Organization

The levels of organization of living things arranged from the simplest to most complex are: atoms, molecules, cells, tissues, organs, organ systems, organisms, communities, ecosystem, and biosphere.

Levels of Organization is composed in 3:
   
                                                                      Ecological Levels
                                                                       
                                    Biological Levels 
                                    
                                    
Chemical Levels
    


  
  

Chemical Levels

The chemical level is composed by:

1. Atoms: The atoms are the first level of organization. Atoms are very smaller, is composed by a nucleus with protons and neutrons. 
An example:

2. Molecules: Is the more easy of all. Are composed by 2 or more atoms. It could be H2O with H and O, etc.
An example:

_________________________________________________
The chemical level finish; start 
                          Biological Levels   

The biological level is composed by:

3. Cell: Is the first biological level, is the source of life; and is composed by various molecules. Also had Cells clasification:


      Eukaryote                                             Prokaryote
   Cell  Clasification       
                                 < ------------------>



 



4. Tissue: Tissue are formed by some cells that work in the same way. They unite and form the tissue it has to types.
An examples:

     Of a plant                                              Of a human 

5. Organ: The organ is composed by tissues that work in coordination. The Organs can be a brain, a lung, heart, etc.
An example:
                            Heart is an organ

   
6. System: System is the group of organs that do it function. There are more than 10 systems in our body!
An examples:                                        
                                                             
Osseous System                                      Nervious System 


7. Organism: Formed by different systems, it also can be called individual and have all the properties to live, have all systems, organs, etc.

 _________________________________________________


Biological levels finish here start;
                               
                           Ecological levels 

                                       
8. Community: The communty is the combination o different species or population. That interact in a same place.

9. Ecosystem: The ecosystem is formed by a community that interact with abiotic and biotic things. That are in different places.

10. Biosphere: In simple words is the combination of various ecosystems in a planet like is the Earth. It form Biosphere.

If you have questions check this video:

En Español https://www.youtube.com/watch?v=mHpqQ7mZSvY

In English https://www.youtube.com/watch?v=u4DrP3WVNu8