Answer: b dead organisms And waste are recycled throughout the tropic levels.
Explanation:
 
        
                    
             
        
        
        
This condition is known as lymphadema. After surgical removal of chain lymph nodes has occurred, the excess of lymph fluids in the lymph vessels might not find its way to the bloodstream as a result of being blocked or other reasons, and hence localized swelling in that area occurs as a result of addition of the fluids. In most cases, lymphadema affects only a single arm or leg, and is commonly brought on by cancer treatment that involves damging or removing lymph nodes.
        
             
        
        
        
<u>Answer:</u>
<em>It is advantageous to have  lesser number of bones in the pectoral girdle.</em>
<u>Explanation:</u>
Pectoral girdle is made up by the bones that connect the upper limbs to the appendicular skeleton  which includes all the limb bones. Pectoral girdle in humans is made up of two bones. They are clavicle (collar bone) and scapula. The pectoral girdle allows the free movement of upper limbs.
The bones of pectoral girdle are not as massive as the bones of pelvic girdle since it doesn’t have the function of support. Lesser number of bones in pectoral girdle makes  movement of upper limbs more free.
 
        
             
        
        
        
They inhibit lh and fsh hormone this stop the maturation of follicles henve they are not released and sperm has nothing to fuse so fertilisation doesn't occur