Answer:
chemical reactions change reactant and produce new substance called products.
Explanation:
chemical reaction is a change which will produce a new substance. ( while physical reaction does not produce a new substance. 
 
        
                    
             
        
        
        
1.other cells 
2. Growth, reproduction
4.nucleus 
6. It makes 2
10.46
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5. Sex chromosomes
6. XX is female, XY is male
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3.zygote
4. No
        
             
        
        
        
The animals who live in those habitats have adjusted to the local temperature so changing the climate drastically, may upset the living organisms there:)