Answer:
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
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I think it’s (d) I’m really sorry if I’m wrong
        
                    
             
        
        
        
Answer:
the particles will eventually fill the space of the room, which is why people will be able to smell her perfume. this is called diffusion.
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What I Think It Is, Global Warming :)
        
             
        
        
        
The answer is recombination or "crossing over" as some people call it! Hope this helps!