Acid rain, economic development, and a century of mining pollute Rocky Mountain waters.
Wiwọle Kolopin ọfẹ, Wa fun ohunkohun Ko si Awọn ipolowo, Milionu ti awọn akọle ati fi kun ni gbogbo ọjọ, Gbogbo awọn iru ẹrọ ati Iṣapeye Ni kikun, Nibikibi ati nigbakugba
