Ozone gas molecule consists of ............

Oxygen molecule splits into two free atoms in the stratosphere layer under the effect

Scientist proposed that the thickness of ozone layer is about 3 mm under the standard temperature and pressure.

Ozone degree is measured in a unit called

One Dobson unit is defined as

Ozone layer absorbs...........

The ozone layer does not allow the passage ultraviolet rays.

Ozone layer allows 100% of the........... UV rays to penetrate the Earth's atmosphere.

Nanometre equals........... metre.

Ozone hole appears over the..........

Ozone hole increases in....... each year.

All the following are from the uses of chlorofluorocarbon compounds except

is/are used as a coolant in cooling devices.

........... result(s) from the burning of fuel of ultrasound concorde aeroplanes.

Greenhouse effect explains

All of the following gases are greenhouse gases except

All the following reasons are causing of global warming except

........... radiation is characterized by thermal effect.

........... is from the animals that will extinct due to the melting of ice in the north and south pole (as a result of global warming).