Answer:
D, they are all the same size.
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>
Yes, because the envelope can be a important document- so therefore it can be considered "confidential".
Answer:
c
Explanation:
I think it's that because is continued growth
