One organic waste that is not found in urine is called Bicarbonate Ions
        
             
        
        
        
There are three sources of genetic variation: mutation, gene flow, and sexual reproduction. A mutation is simply a change in the DNA.
        
             
        
        
        
Answer: D
Explanation:
Seasons are not biotic bc they are not living, and we know from playing Minecraft that savannas are not covered in conifers but are covered in grass and a few trees
*Beep Beep*
Lettuce
 
        
             
        
        
        
Explanation:
They are useful as they can predict the genetic probability of a particular phenotype arising in a couple's offspring. In other words, it can tell you if you will or will not have a certain trait.