i need to identify 1 desirable conseq. and 1 undersirable conseq.of the coal burn.pl. in providing electricity

Answer 1

CO2 production for negative, and power generation allowing for machinery to work for a positive.

Answer 2

The CO2 is taken care of by the plants.
If we burn the coal in a plant like that the pollution will be negative because they are required to have scrubbers ,which removes most pollution. Much better than modifying your car to burn coal.