Out of the choices given, the reason why Kathy's body feels sore and she has pain in her limbs after vigorously exercising is an accumulation of lactic acid in the muscles of her limbs. The correct answer is A. 
        
                    
             
        
        
        
The answer is B) Genetic variation
 
        
                    
             
        
        
        
Answer:
Gibberellins were extracted from <em>Bacteria</em>
 
        
                    
             
        
        
        
Answer:
i think they are orignally from cold areas so they store water and moisture in there needles. and they stay green year round. 
Explanation:
 
        
             
        
        
        
A, B, D
Cellular respiration is the process responsible for converting chemical energy, and the reactants/products involved in cellular respiration are oxygen, glucose (sugar), carbon dioxide, and water. While the exact steps involved in cellular respiration may vary from species to species, all living organisms perform some type of cellular respiration. Without cellular respiration, living organisms wouldn’t be able to produce the chemical energy they need
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