Answer: The sun sustains all life on earth through photosynthesis, the process by which plants and other organisms convert the energy of sunlight into chemical energy, stored in the bonds of organic molecules. A central challenge of modern science is to replicate this process using synthetic catalysts, and thus produce solar fuels by artificial photosynthesis.
Explanation:
It contains the DNA and control the cell :)
In the atmosphere, as air warms it rises, allowing cooler air to flow in underneath.
I believe your answer would be A.) because silent mutations change the sequence of mRNA, but not the function. (Henceforth being called "silent")
Hope this helps!