<span>achievement
</span>A test that measures a person's knowledge in a specific subject area is a(n) achievement test.
        
             
        
        
        
Striking a matchstick as after it strikes it gives off both heat and light.
        
                    
             
        
        
        
Answer:
Humans see optical illusions when the visual system (the eyes and the brain) attempts to interpret an image that evokes a perception that deviates from reality. Your brain displays an image that makes the most “sense,” but it is not always what is actually in front of our eyes.
 
        
             
        
        
        
May occur in oceans is a type of transforms boundary is a region where earthquakes occur
        
             
        
        
        
Genetic alteration refers to altering DNA sequence. Gene alteration forms genetically modified products that modifies the gene sequence. DNA consist of two long chains of nucleotides that are twisted and joined together in hydrogen bonds. These DNA cannot be altered in nature but gene expression can be altered.