The earth rotates around its axis as it revolves around the sun. it takes the earth one year to complete a revolution.
        
                    
             
        
        
        
Trisomy=3 chromosomes; 1 more than the required pair (2)
21=the type of chromosome 
So, here we can eliminate A and B.
Now we have C and D.
I know that when sperm cell(s) simultaneously fertilize [an] egg, a class of identical twins will form. Therefore, we can eliminate D, leaving us with merely C. Henceforth, C is your final answer.
 
        
                    
             
        
        
        
Answer:
I think it's True (viewpoint) 
 
        
                    
             
        
        
        
Converting solar energy does not affect the earth system
        
                    
             
        
        
        
Answer:
When air pollution began, it caused acid rain, damaging and destroying forests. It caused animals to become ill and potentially die as the acid rain ruined their environment. The air pollution also made around 400,000 people die faster than they would without air pollution.
Explanation:
got 100% on EDGE 2022