Answer:
The main difference between diesel and petrol engines is that petrol engines use spark plugs to ignite the air-fuel mixture, while diesel engines rely solely on heavily compressed air.
Explanation:
Brainliest please?
 
        
             
        
        
        
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D. in the nucleus 
the process of making mRNA from DNA is called transcription, it occurs in the nucleus
        
             
        
        
        
1) transcription.-
2)Transcribed.-
3)Cells nucleus.-
4)Cytoplasm.-
5)RNA polymerase.-
6.-
7)Introns.-
8)Exans.-
Hope this helps!