Here's link to the answer:
tinyurl.com/wpazsebu
 
        
             
        
        
        
Composting because it converts left over food into soil that is rich in minerals 
        
             
        
        
        
The answer is homologous chromosomes.
        
             
        
        
        
DescriptionPopulation density is a measurement of population per unit area, or exceptionally unit volume; it is a quantity of type number density. It is frequently applied to living organisms, most of the time to humans. It is a key geographical term.
        
             
        
        
        
The layer of the sun is in three equally side the sun the moon and the galaxy