Which of the following is a significant impact of burning biomass? 

A)  It does not cause water pollution. 
B)  It releases more carbon dioxide per ton burned than coal does. 
C)  It can cause soil erosion, water pollution, and loss of wildlife habitat. 
D)  It releases more air pollution per unit of energy produced than does uncontrolled burning of coal.

Burning biomass can have negative impacts on the environment, including causing soil erosion, water pollution, and loss of wildlife habitat. While it may not release as much carbon dioxide as coal, it still contributes to greenhouse gas emissions. Additionally, depending on the method of burning, it can release pollutants into the air. Choice A is incorrect because burning biomass can still contribute to water pollution through runoff or ash disposal. Choice B is incorrect because biomass generally releases less carbon dioxide per ton burned than coal. Choice D may be true depending on the method of burning and the emissions controls in place.