Natural Science

1 light year = ?

A) 9.5 x 10 km

B) 9.5 x 109 km

C) 9.5 x 1012 km

D) None of these

The ozone gas?

A) Destroys the floating germs in the air

B) Increases the floating germs in the air

C) Decreases the floating germs in the air

D) None of these