Answer:
The same number of each type of atom will always be present before and after a chemical reaction takes place.
Explanation:
 
        
             
        
        
        
Answer:
The correct answer is B photosynthesis stores energy,while cellular respiration releases energy.
Explanation:
Photosynthesis is an anabolic process that utilizes the atmospheric CO2 along with water molecule as a electron donor to generate glucose sugar and oxygen gas.Photosynthesis helps to store the light energy in form of chemical energy in the bonds of glucose molecules produced during photosynthesis..
  on the other hand cellular respiration is a catabolic process that oxidizes glucose to generate energy in form of ATP along with CO2 and water as a byproduct.
 
        
             
        
        
        
I think the answer is C and D
 
        
                    
             
        
        
        
Answer:
 <em>In the lungs, the blood receives oxygen then leaves through the pulmonary veins. It returns to the heart and enters the left </em><em>atrium</em><em>.</em>