Abundance. Hope this helps :))
        
             
        
        
        
Answer:
the answer is A
Explanation:
Animals get thenitrogen they need by eating plants or other animals that contain nitrogen. When organisms die, their bodies decompose bringing the nitrogen into soil on land or into ocean water.
 
        
                    
             
        
        
        
The Dorsal Spines give the fish, "3 Spined Stickleback", because they have hard, spines on their backs. I hope this helps!!!
        
                    
             
        
        
        
Answer:
While in mitosis, genes are generally transferred faithfully from one cellular generation to the next; in meiosis and subsequent sexual reproduction, genes get mixed up. Sexual reproduction actually expands the variety created by meiosis, because it combines the different varieties of parental genotypes.
Explanation:
I did research
 
        
             
        
        
        
Catalyst. A catalyst is a substance that increases the rate of a reaction without being consumed the rate of a reaction without being consumed in process, or being chemically altered. There are many enzymes present in cells, proteases, lipases, that speed up metabolism, and catalysts .
 hOpe this has helped you any . >)