WHAT IS A SERIOUS PROBLEM OF LAKE BAIKAL IN RUSSIA
29. What is a serious problem of Lake Baikal in Russia?
A.
The government did not have the power to enforce laws and regulations.
B.
It contains a rich variety of animals and plants.
C.
It is polluted by massive volumes of industrial wastes discharged into it.
D.
It has 1, 300 rare species that do not exist anywhere else in the world.