Answer: Stimulus is something that causes a reaction, either positive or negative in the body of an organism. Examples includes, HEAT, COLD, PRESSURE, PAIN
Explanation:
 
        
             
        
        
        
<h3><u>Answer;</u></h3>
Evaluate the validity and reliability of processes and findings.
<h3><u>Explanation</u>;</h3>
- <em><u>Scientific argumentation is a stage of scientific inquiry in which scientists make claims, based on observable evidence, and then clarify with justification of the evidence as relevant to the claims.</u></em>
- <em><u>It is therefore, an important part of scientific inquiry as it aims evaluate the validity and reliability of processes and findings. Scientific claims from an investigation should be based on evidence that is justified based on the claims.</u></em>
 
        
        
        
The law is something that has been verified
        
                    
             
        
        
        
Answer: D. Mitochondrion
Explanation:
The mitochondrion is always the powerhouse of the cell!
 
        
             
        
        
        
Answer:
(1) they keep toxic substances out of the cell. 
(2) they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles