<span>I believe it is light, but this is kind of a confusing question. Technically there is a independent and dependent variable in the question. The variable being manipulated is light, and the earthwork activity depends on the light. </span>
 
        
                    
             
        
        
        
Answer:
lysosomes, small molecules 
Explanation:
-plants:usually not evident Animals: occurs in cytoplasm
-small organelles filled with enzymes 
-"clean up crew" 
- the digestion or breakdown of lipids, carbs, and small proteins into small molecules that can be used by the rest of the cell 
-involved in breaking down organelles that have outliveed their usefullness 
-diseases are trace to lysosomes that dont function properly
 
        
             
        
        
        
It should be natural selection since there is no external influence implied. (like environment or genetic mutations.)
        
             
        
        
        
A is your answer I believe because they do indeed provide a way to review other scientists work and or experiments
        
                    
             
        
        
        
Chemosynthesis is the biological conversion of one or more carbon- containing molecules.