Answer:
B) They release oxygen that organism use to breathe.
Explanation:
The process of this is called Photosynthesis. The plant takes in carbon dioxide and sunlight. The sun and water makes it possible for the plant to make sugars which are glucose which is the plant's food. And the byproduct of that is oxygen.
 
        
                    
             
        
        
        
A nucleic acid that carries the genetic information in cells and some viruses,
consisting of two long chains of nucleotides twisted into a double helix and 
joined by hydrogen bonds between the complementary bases adenine and thymine or cytosine and guanine. 
        
                    
             
        
        
        
Electrons are Negative.
Protons are Positive.
Neutrons are No charge.
Molecules are Made of atoms.
        
                    
             
        
        
        
An asteroid hitting the earth would cause a lot of dust, ash, and other debris to go into the atmosphere which would block the sun which would cause the temperature to decrease.