WHAT IS A SERIOUS PROBLEM OF LAKE BAIKAL IN RUSSIA

73. What is a serious problem of Lake Baikal in Russia?A. It contains a rich variety of B. It is polluted by massive volumes ofanimals and plants. industrial wastes discharged into it.D. The government did not have theC. It has 1,300 rare species that donot exist anywhere else in the world.power to enforce laws and regulations.