An ecosystem is a self supporting system in which there is a flow of materials and energy. 
<h3>What is an ecosystem?</h3>
An ecosystem is a self supporting system in which there is a flow of materials and energy. 
Let us now see the role of each organism in the small ecosystem.
- flower - producer
- butterfly - primary consumer
- bird - secondary consumer
- earthworm - decomposer
Learn more about ecosystem: brainly.com/question/13979184
 
        
             
        
        
        
It is true that your respiratory system is the system in your body that is responsible for your breathing. 
        
                    
             
        
        
        
Many metabolic prpcesses depend on water such as electron transport chain and glycolysis
        
                    
             
        
        
        
The term light year refers to the distance light travels in a year.