Which plant produce ozone at the time photosynthesis

What is the name of the international agreement committing parties to phasing out ozone depleting substances and phasing down hydrofluorocarbons (HFCs)?

In which sphere Ozone layer depletion is found?

When was the first ozone hole discovered?

The depletion in the Ozone layer is caused by:

Which of the following represents ozone gas molecule:

Number of countries signed Montreal Protocol is _____ :

Who discovered the ozone layer?

Which of the following devices can be used to measure ozone in the stratosphere from the ground?

Who discovered the formation of ozone from photochemical reactions?

Between what altitudes, is the ozone layer found in highest concentrations?

Montreal protocol to reduce production of chlorofluorocarbons was assigned in

Where is the 'hole' in the ozone layer located?

Which of the following UV radiations is responsible for causing sun burns and skin cancer?