A fish swims with it's fins and breathes under water with it's gills.
        
             
        
        
        
You need to recognize that the higher on the food chain, the fewer the number of organisms that occupy that level. This is because of the energy that is available from one level to the next has to decrease since it is used for life's processes. 
please give thanks! and brainliest
        
             
        
        
        
it dates back to the Precambrian era
        
             
        
        
        
Answer: Methamphetamine
Explanation: Methamphetamine is a potent central nervous system(CNS) stimulant that is mainly used as a recreational drug and less commonly as a second line treatment for attention deficit hyperactivity disorder and obesity.
 
        
             
        
        
        
Answer: D. I, II, III, IV, V, and VI
Explanation:
Oxygen is recquired for cellular respiration and break down nutrients like sugar to create ATP. Organisms from all kingdoms like Bacteria, Archea, Plants, Protists, animals and fungi can use cellular respireation.