(Choice A) A community A contains more resources per individual then Community B
        
             
        
        
        
In general, the function of the excretory system is,  removal of nitrogen waste products from the bloodstream and transport out of the body through urine. It maintains the balance of fluids and electrolytes, control of red blood cells, regulation of blood pressure and also the formation of red bone marrow.
In humans, the excretory system is responsible for removing waste from the body. Metabolic waste is being removed from the blood and an appropriate amount of water nutrients and water and salt are being retained.
In frogs, the excretory system consists of a pair of ureters, kidney pairs, cloaca, and urinary bladder. Frogs take in liquid waste from kidney which removes wastes and then the extra water becomes urine which then it is collected in the urinary bladder through ureters.
The urinary bladder is present in ventral to return then both open into the cloaca.
        
             
        
        
        
Answer: a. increased energy efficiency
Explanation:
 
        
                    
             
        
        
        
Hello,
Here is your answer:
The proper answer to this question is option A "<span>Stem that stores water".
For example: A Cactus stores water in its steam in order to survive in the desert.
Your answer is A.
If you need anymore help feel free to ask me!
Hope this helps!</span>
        
                    
             
        
        
        
The answer is A. macromolecules 
There are 4 types of macromolecules; lipids, proteins, carbs and nucleic acids