I believe it is A because Living things respond to changes, each and every living organism is  made up of cell and adapting to changes is same as responding to changes.So, only one left is A. 
        
             
        
        
        
They produce oxygen they are used as shelter, they are used for blocking the shade, they sustain other animals that sustain the planet and us.
        
             
        
        
        
Answer:
Organisms respond to a signal called a stimulus.
Explanation:
 
        
             
        
        
        
A virus that specifically attacks podocytes <span>would damage the visceral layer of the glomerular capsule .The podocytes is one of the components of the nephrons. 
</span><span>The capillart called glomerular capsule together with a capsule of epithelial cells form the renal corpuscle.
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NREM 3
The correct answer is: Stage 3
I hope that helped! c: