These are the most common symptoms associated with PSTD
        
             
        
        
        
Answer: Stimulus is something that causes a reaction, either positive or negative in the body of an organism. Examples includes, HEAT, COLD, PRESSURE, PAIN
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Answer:
Eggs are among the best sources of protein in the diet. In fact, the biological value (a measure of protein quality) is often evaluated by comparing it to eggs, which are given the perfect score of 100 ( 16 ).
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Nucleus is the correct answer. I am 100% sure