What has released toxic ions of cadmium and aluminum into the soils, causing trees to weaken?
A) Air pollution
B) Photochemical smog
C) Volatile organic compounds
D) Nitric acid
E) Acid deposition

Question

Quizplus · Accepted Answer

Acid deposition, also known as acid rain, is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the atmosphere to form sulfuric and nitric acid. Acid deposition can release toxic ions of cadmium and aluminum into the soils, which can weaken trees.

What Has Released Toxic Ions of Cadmium and Aluminum into the Soils