Answer: Atoms constitute the fundamental units of matter, and are a constituent of each element. In large part, the mass of an atom is determined by its positively charged  protons and neutral neutrons.
Explanation:
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The enzyme that breaks down H2O2 is called catalase.
        
             
        
        
        
The advantage of natural breeding are the following:
1. cattle produce may eradicated hereditary sickness.
2. the cattle that is produce is fitter, stronger and can survive through harsh condition because they are use to it.
3. they can produce better food
        
                    
             
        
        
        
 Answer:
Tbh they come from the Male sperm and the Female egg. Once the sperm fertilizes the egg then you have a baby! That's the short and simplified answer
Explanation: