Answer:
Geiger counters are commonly used to measure the amount of radioactivity, but there are other types of detectors that may be used
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 D the expansion of their territory
        
                    
             
        
        
        
Answer:
I would say the second one.
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I'm sorry if it's wrong
 
        
                    
             
        
        
        
Answer:
II really have no idea but it might be A? 
Explanation:
If I'm wrong I'm so sry T-T
 
        
             
        
        
        
Answer:
'Gametes are formed through a process of cell division called meiosis. This two-step division process produces four haploid daughter cells. Haploid cells contain only one set of chromosomes. When the haploid male and female gametes unite in a process called fertilization, they form what is called a zygote.'
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