Question

what do you mean by ozone hole ?
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Answer 1

Explanation:

The term 'ozone hole' refers to the depletion of the protective ozone layer in the upper atmosphere (stratosphere) over Earth's polar regions. ... Stratospheric ozone is constantly produced by the action of the sun's ultraviolet radiation on oxygen molecules (known as photochemical reactions)

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Answer 2

$\huge \star \purple {AnsWer}$

ᴛʜᴇ ᴛᴇʀᴍ 'ᴏᴢᴏɴᴇ ʜᴏʟᴇ' ʀᴇғᴇʀs ᴛᴏ ᴛʜᴇ ᴅᴇᴘʟᴇᴛɪᴏɴ ᴏғ ᴛʜᴇ ᴘʀᴏᴛᴇᴄᴛɪᴠᴇ ᴏᴢᴏɴᴇ ʟᴀʏᴇʀ ɪɴ ᴛʜᴇ ᴜᴘᴘᴇʀ ᴀᴛᴍᴏsᴘʜᴇʀᴇ (sᴛʀᴀᴛᴏsᴘʜᴇʀᴇ) ᴏᴠᴇʀ ᴇᴀʀᴛʜ's ᴘᴏʟᴀʀ ʀᴇɢɪᴏɴs. ... sᴛʀᴀᴛᴏsᴘʜᴇʀɪᴄ ᴏᴢᴏɴᴇ ɪs ᴄᴏɴsᴛᴀɴᴛʟʏ ᴘʀᴏᴅᴜᴄᴇᴅ ʙʏ ᴛʜᴇ ᴀᴄᴛɪᴏɴ ᴏғ ᴛʜᴇ sᴜɴ's ᴜʟᴛʀᴀᴠɪᴏʟᴇᴛ ʀᴀᴅɪᴀᴛɪᴏɴ ᴏɴ ᴏxʏɢᴇɴ ᴍᴏʟᴇᴄᴜʟᴇs (ᴋɴᴏᴡɴ ᴀs ᴘʜᴏᴛᴏᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴs).