How does burning fossil fuels change the carbon cycle?

the carbon cycle is changing. Humans are moving more carbon into the atmosphere from other parts of the Earth system. More carbon is moving to the atmosphere when fossil fuels, like coal and oil, are burned. ... Burning wood releases carbon into the atmosphere that had been stored in the tree.

Explanation:

This seems more like civics than geography, so your teacher may be slightly confused as to what class she's teaching, but the answer would be D, although whoever wrote the question also seems to be confused, as the choices available are really vague and answer C doesn't really make all that much sense.