The answer is b.gold can’t really explain but the answer is b.
The reserve of a fossil fuel might be increased if mining or extraction techniques improve so that more of fuel can be extracted for a profit
I'm pretty sure (C) Nitrogen is a compound.
Answer:
I do not know how to solve this bit i THINK 38.56
Explanation:
The answer is either A or C. Sorry I'm not much help :)
