Question

will fan and give medal
some coal emits sulfur when it is burned. why is this a problem

Answer 1

A. sulfur is black and coats surfaces with black dust
B. sulfur forms sulfur dioxide,which acts like air pollutant
C. sulfur produces heat so it needs to remain in the coal
D.sulfur increases the green house event

Answer 2

@damneny @

Answer 3

i am not so sure about my answer i may say the answer is B

Answer 4

what do you think the answer is

Answer 5

got it the answer is B bye have a nice day

Answer 6

Yes, your answer is correct. Nice!