Answer:
A) chemical reactions. 
Explanation:
"Photosynthesis is the process through which plants convert light energy into chemical energy. Here is the chemical reaction involved: As we can see, water and carbon dioxide combine to form glucose and oxygen. Since new chemical species are formed, photosynthesis is clearly a chemical change.
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A group of individuals of the same species that interact will find a mate and cross breed and produce a stronger species to survive they're environment. per Darwin's law..
        
             
        
        
        
Answer:
An enzyme’s shape is tied to its function. Heat, disease, or harsh chemical conditions can damage enzymes and change their shape. When this happens, an enzyme doesn’t work anymore. This affects the body processes the enzyme helped support.
Explanation:
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