Clean-Energy Future

It must be a key point in easing climate change if we cut down on the use of batteries in electric vehicles.

• True

• False

Cobalt is supposedly to be seen one of the metal far less ____metal than any other metal.

According to the context, where can cobalt be seen on the earth?

• on the earth's surface

• on the seabed

• in the earth's crust

• inside the volcano

Why does Cobalt cause environmental problems?

• the competition of the mine establishment

• greedy people fight for it

• it is rare

• Congo forbid other countries to get it

What was not destroyed by the cobalt mines in Congo?

• crop soil

• air

• water resouses

• landscapes

What disease may a miner in Congo not get?

• heart disease

• lung cancer

• shortness of breath

• diabetes

Children who are as young as ____years old may be forced to be the miners in Congo.seven