Dusting.......
HOPE it helps!!!!!
I think that this would be carbohydrates, I'm not completely sure though.
<span />
Answer:
one is sugar backbone I think I wish you luck
Acid rain<span> is caused by a </span>chemical<span> reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other </span>chemicals<span> to form more </span>acidic<span> pollutants, known as </span>acid rain<span>.</span>
Ethologist :D ..............................