Why do lakes in the United States and Canada become dead lakes
A: Fish in the lakes die because acid rain deprives them of oxygen.
B: Fish in the lakes die from taking in poisonous substances released from the acids.
C: Fish in the lakes die from direct contact with accumulated acid in the water.
D: Air pollutants are dissolved in the water and thus kill the fish.
A: Fish in the lakes die because acid rain deprives them of oxygen.
B: Fish in the lakes die from taking in poisonous substances released from the acids.
C: Fish in the lakes die from direct contact with accumulated acid in the water.
D: Air pollutants are dissolved in the water and thus kill the fish.
举一反三
- Where does the fresh water come fromIt comes from rivers, lakes and _________________________.
- It is reported that air pollution affects rivers and lakes indirectly because it causes acid rain.
- The most important lakes in the United States are the Great Lakes, they are located between Canada and the United States except ____.( ) A: Lake Erie B: Lake Huron C: Lake Michigan D: Lake Ontario
- Rivers, lakes and seas may be polluted by all of the following except ________. A: oxygen B: acid rain C: fertilizers D: waste material
- The Great Lakes are shared between the United States and Canada except for Lake Ontario.