Which of the following explains why surface mining causes more widespread health problems than sub-surface mining?
Dust from surface mining is often contained in mines, while dust from sub-surface mining is absorbed in the chemicals from fracking.
Dust from surface mining is absorbed in the chemicals from fracking, while dust from sub-surface mining is mostly contained in mines.
Dust from surface mining is exposed to the atmosphere people breathe, while dust from sub-surface mining is mostly contained in mines.
Dust from surface mining is mostly contained in mines, while dust from sub-surface mining is exposed to the atmosphere where people breathe.
