The independent variable is the temperature. Independent variable refers to the  variable in an experiment that can be changed by the scientists or the one making the experiment. A good experiments has a single independent variable and the changes observed will be the dependent variable. In this case, the dependent variable is the gender of the turtle.
        
             
        
        
        
That statement would be True
        
                    
             
        
        
        
Answer:
Predator
Explanation:
Since a Praying Mantis is an animal that naturally preys on others, it would be considered a Predator
 
        
             
        
        
        
I think it would be to exchange gases.  When you think about it, plants in the past were always underwater.  They didn't have any air.  Now, they are on land and need to be able to exchange gases from the leaves to the roots.