Answer:
by looking at their physical features, the fossil record, and dna sequences
 
        
             
        
        
        
Answer:
The ring of fire is an area around the pacific ocean where there is a lot of volcanic activity 
Explanation:
 
        
             
        
        
        
Tropical climate is a region of the earth surrounding the equator.  When the earth is exposed to light from the sun it is right over the equator and up 23 degrees of latitude Tropic of Cancer in the northern hemisphere and Tropic of Capricorn in the southern hemisphere
        
             
        
        
        
Answer:
pre zygotic barriers including temper isolation