What are the two ways that humans have most interfered with the carbon cycle?
A) burning fossil fuels and removal of forests and brush
B) aerobic respiration and burning fossil fuels
C) respiration and photosynthesis
D) removal of forests and aerobic respiration

Question

What are the two ways that humans have most interfered with the carbon cycle? 
A) burning fossil fuels and removal of forests and brush 
B) aerobic respiration and burning fossil fuels 
C) respiration and photosynthesis 
D) removal of forests and aerobic respiration

Quizplus · Accepted Answer

Burning fossil fuels releases carbon into the atmosphere that was previously trapped underground, while removal of forests and brush reduces the amount of photosynthesis occurring, which would normally remove carbon dioxide from the atmosphere.

What Are the Two Ways That Humans Have Most Interfered