What is the difference between acid rain and acid deposition

When atmospheric pollutants such as sulphur dioxide and nitrogen oxide mix with water vapor in the air, they are converted to sulpheric and nitrtic acid.These acids make the rain acidic which means acid rain. A second method of acid doposition is known as dry deposition

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.