Imprimir Test: Ozone layer ()

1.

How many problems does the ozone depletion describes? They are related?

A.

One, they are no related.

B.

Two, they are related

C.

Three, they are related

D.

Two, they are related

2.

Did the ozone layer get better or worst?

A.

Are the same

B.

Is better now

C.

Is worst know

3.

Which is the most important cause of the ozone hole?

A.

Because much people smoke

B.

Is the presence of chlorine-containing source gases

4.

Which is one consequence of the ozone layer depletion?

A.

Skin cancer

B.

Is the presence of chlorine-containing source gases