I believe the answer should be solar
        
             
        
        
        
Usually the y-axis stands for dependent variable while the x-axis stands for independent variable. And the curve stands for the relationship between the two variables. The control variable and measurement variable often means the independent variables.
        
                    
             
        
        
        
A Pseudopodia is a temporary protrusion of the surface of an amoeboid cell for movement and feeding.
        
             
        
        
        
Yeah the answer above me makes sense...