The matter can be classified in two different ways; (a) according to its state, and (b) according to its composition. Matter can exist in three different states, solid, liquid, and gas, based on the way the atoms and molecules are arranged inside them.
 
        
             
        
        
        
I would say B). Hope this helps!
        
                    
             
        
        
        
Answer:
Mass is conserved in living systems through the processes of photosynthesis, cellular respiration, and the carbon cycle. It is demonstrated in cellular respiration through the process of braking down food to provide energy and releasing carbon dioxide.
Explanation:
 
        
             
        
        
        
Answer: C
Explanation: Instead of doing all of the experiments by yourself, you should ask other scientists for help, If you don’t, you would never know if they might get different results than you.
*Answer C makes more sense than the other answers.*