Answer:
Mars could have life. 
Explanation:
This is because it is at a temperature that could sustain life. Also, bacteria has been found from Mars. 
 
        
                    
             
        
        
        
Answer:
The correct answer would be acrylic glass.
It can be explained with the help of refractive index.
It is a dimensionless number used to describe that how fast a light can propagate through a material.
Thus, the more the refractive index the more will be the bending.
Acrylic glass has the least refractive index as compared to the other materials provided.
Thus, the light would bend the least if acrylic glass would be used.
 
        
             
        
        
        
They observe it, run tests on many different things, and do expirments
        
             
        
        
        
Answer:
In Korean it means “ I love you”
        
             
        
        
        
Explanation:
While anatomy deals with the structure of the parts of an organism, physiology studies the way that the parts function together.