SiO2 is the only possible choice because the other formulas contain metals. how do we know this? because the other formulas contain elements located on the left of the “staircase” on the periodic table that separates metals from non-metals.
        
             
        
        
        
Photosynthesis takes place in the chloroplasts, that is why the chloroplasts is green. The function of this organelles is to create energy into sugar from the sunlight.
        
             
        
        
        
a homogeneous mixture is a mixture that appears to be one thing. for example air would be one.
 
        
             
        
        
        
Answer:
Petrochemicals are chemical products derived from petroleum, although many of the same chemical compounds are also obtained from other fossil fuels such as coal and natural gas or from renewable sources such as corn, sugar cane, and other types of biomass.
 
        
                    
             
        
        
        
<span>side-by-side alignment of homologous chromosomes</span>