I think its C... but I'm not too sure. I did some research and couldn't find exactly what you were looking for but, I found loopholes and I think since when the cell increases, the surface area does not affect cell divisions steps. Therefore, I don't think it would change any other way...
Answer:
Explanation:Q.)ATP= ADENOSINE TRI PHOSPHATE, ADENOSINE DI PHOSPHATE, DNA= DEOXYRIBO NUCLEIC ACID, RNA= RIBO NEUCLEIC ACID
Q.) BLOOD IS RED DUE TO THE PRESENCE OF HAEMOGLOBIN. BLOOD CONSISTS OF RBC , WBC AND PLATELETS
Q.) GREEN REVOLUTION BROUGHT ABOUT CHANGES IN AGRICULTURAL INDUSTRY LIKE USE OF HYV SEEDS . WHITE REVOLUTION CHANGED THE DAIRY INDUSTRY
No they cant be mechanical because then something would have to generate their rays through the inventing of a machine.
