The answer is A. i say this because when they use sunlight as energy, cabon dioxide and water are converted into organic material, they are used as cellular functions ( such as biosynthesis and respiration ). An able autotroph is able to make his own food. 
        
                    
             
        
        
        
It acts as biological catalysts, which can speed up the chemical reactions, it can fit substrates into its active site and produce a product, but the enzyme shape is not changed and it can be reused. just unless the enzyme meets high temperature or extreme pH values, which will denature them
        
             
        
        
        
Make a Writing by analyzing the article by scientist Fernando Reinach. In the First Paragraph, you must present the text that will be analyzing. In the Second, you can highlight the positive aspects of the text.
        
             
        
        
        
Answer:
I think the answer is A.  the complementary shapes of an enzyme and a substrate.
Explanation:
I hope this helps! Correct me if I am wrong.
 
        
             
        
        
        
Answer:
2 The Solution Removes Carbon Dioxide From The Atmosphere 
Explanation:
This is my example (Photosynthesis)
Photosynthesis removes carbon dioxide naturally — and trees are especially good at storing carbon removed from the atmosphere by photosynthesis.