Answer:
the rock cycle that's a thing? 
 
        
             
        
        
        
Answer:
D
Explanation:
Bacteria, air, animals, plants
 
        
                    
             
        
        
        
Answer: 23 chromosomes
In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells. The number of chromosomes in a single set is represented as n, which is also called the haploid number. In humans, n = 23.
HOPE THIS HELPS
 
        
                    
             
        
        
        
Plants and animals are multicellular (which means many) and Unicellular means only one cell. Please mark as brainliest answer if it helped