Answer:
to know whether there is starch in the leaf
 
        
             
        
        
        
Precipitation( condensation), evaporation 
please vote my answer brainliest. thanks!
        
             
        
        
        
Bodily functions that help keep it stable. Like sweating when your are hot keeps your body at a cooler temperature rather then burning up. 
        
                    
             
        
        
        
The level of organization is plants, coral and water. Water came first.