The answer to the question is environmental factors
Amine is the class of organic compounds that contains nitrogen
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D) because both reactions are occurring at the same rate. They are not equal but their concentrations are constant.
Yes. Stars use fusion to create nuclear energy, which is what makes them "alive". The older they are, the "bigger" the element in them is. Hydrogen turns into Helium, and when hydrogen is used up, the helium starts fusing into bigger elements. it stops at iron however. Once stars start fusing silicon to iron, it is doomed because it takes more energy than it gives off.