There is a basic difference, because mass is the actual amount of material contained in a body and is measured in kg, gm, etc. Whereas weight is the force exerted by the gravity on that object mg.
        
             
        
        
        
Hypothesis: If Plant Food X is used on a tomato plant, then production rate will increase. 
experiment: Gather 2 tomato plants of the same height and age. Make two groups, a control group (a tomato plant without use of fertilizer) and an experimental group (a tomato plant with using Plant Food X).
For one week, give each plant the same amount of water, humidity, sunlight, and air temperature. after a week measure the height and number of tomatoes produced. gather the info in a table and compare to hypothesis after one week. 
        
             
        
        
        
Answer:
Cells / Cells Unit
Explanation:
The reason why cells is the basic unit of structure and function in all living things is because the cells form parts for the organism and it carries out all of the organism's processes or it's functions.
 
        
                    
             
        
        
        
Because men have an x and a y and women have 2 x's, but sometimes a man can only have a y and a women can only have an x so it messed up