false there are 7 in total
north america
Europe
Asia
Antarctica
Africa
Australia
and south america
hope this helps and is what your looking for 
 
        
                    
             
        
        
        
The answer is either B or D. Letter A doesn't make sense and letter C isn't right either because you need rainfall to have fertile plains.
        
             
        
        
        
<em>Chromosphere</em>
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<em>Hope it can help !!!</em>
 
        
                    
             
        
        
        
The answer in finding the age of a sedimentary rock layer through radiometric dating can be assumed <span>between the absolute ages of the two igneous units.
Sedimentary rocks don't have radioactive elements so the beast way to know the age is through understanding what can elements in between can provide as evidence</span>
        
                    
             
        
        
        
It is not true because we can see earth with other things