You can use refraction which is the bending of light through a transparent material. Also the freezing and boiling points of water. One last one is the Cartesian five experiment, this shows the density of water. Hope this helped.
        
             
        
        
        
Answer:
1 plus 1 + 2= 8 ur welcome ;]
Explanation:
 
        
             
        
        
        
Answer: B. Osmosis Across a Membrane
The movement of water across a gradient is called osmosis.