It would be B I believe that is what i put on the quiz. I hope I helped
        
                    
             
        
        
        
Options not given but 
Clouds at medium altitudes are made of ice crystals.
As the mid-level clouds form ice crystals when the temperature is cold.
hope it helps
 
        
             
        
        
        
Answer:
in plants is responsible for the timing of seasonal activities such as flowering and growth.Transpiration is the loss of OXYGEN through a plant's leaves. False- water. When the guard cells of a leaf lose water, the stomata OPEN.
Explanation:
so the answer is True
 
        
             
        
        
        
<span>C.	metric ruler since millimeters are metric</span>