The amount is always constant. The answer is letter A. The carbon atom is recycle in the biosphere. It may take different forms but it is still the same carbon atom. Carbon in fuel may turn into carbon dioxide or carbon monoxide after it it burned. The CO2 may then be used up by the plants as fuel to make another form of carbon based compounds such as sugar (glucose). For more information, I suggest looking up the carbon cycle.
it will have no chance, remain the same
Answer:
A. Wood logs are burned in a fire
Explanation:
A. As you make more and more of one good or service, you will also make more and more of another.