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
 
        
             
        
        
        
Answer:
Explanation:
You list the references in order of the last name of the author. For instance a book by Zachary Adam would come before a book by Adam Zachary. (Just an example)
Adam, Zachary. "Works Cited Example 1." Place of Publication: Publisher, Year.
Zachary, Adam. "Works Cited Example 2." etc.
 
        
             
        
        
        
Sister chromatids separate during anaphase
        
             
        
        
        
It’s gases. Gas particles are always moving around. They have no fixed position and so they have high energies. Density depends on how many particles are present, so if the gas particles move around freely there will be very less density, but if you compress them their particles will increase in number thereby increasing the density