Answer:
In the Northern Hemisphere the autumnal equinox falls about September 22 or 23, as the Sun crosses the celestial equator going south.
Explanation:
 In the Southern Hemisphere the equinox occurs on March 20 or 21, when the Sun moves north across the celestial equator.
 
        
             
        
        
        
Canada and Mexico . are the two countries
        
             
        
        
        
a region that is made up of different places that are linked and function as a unit
        
                    
             
        
        
        
Two ecozones would be different it they had two different climates