Answer:
Chromosome pairs with its corresponding homologous chromosome to form a tetrad.
 
        
             
        
        
        
Earth's service would be bare. There would no longer be life and all water ways would become dried up due to the intense ultra-violent rays of the sun.
  
        
             
        
        
        
A: Anisotropy ; Angstrom ; Astrophysics 
T: Terrestrial (planet[s]) ; telescope ; tectonics 
(if that's what you meant)
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