I am pretty sure that this question belongs in the maths section not the geography section.
Anyways, the answer is simply to find.
First make sure the units are the same.
Secondly, subtract the first sphere number by the second.
The answer is 35 cubic in.
Hope I helped!!! :)
Answer:
burning fossil fuels for heating up homes
decomposing leaves
livestock (cows)
rice production
land areas that act as sinks,absorbing carbon from the atmosphere
Sorry dude..
I don't know from where u got this question but I wasn't able to get the answer from nowhere..!!
hmm..