Question

Which pollutant in air causes hay fever?
(a) Dioxins
(b) Pollen
(c) Carbon dioxide
(d) Carbon monoxide​

Answer 1

Answer:

ʙʏ ғᴀʀ ᴛʜᴇ ᴍᴏsᴛ ɪᴍᴘᴏʀᴛᴀɴᴛ ɪɴᴅᴏᴏʀ ᴘᴏʟʟᴜᴛᴀɴᴛ ɪs ᴛᴏʙᴀᴄᴄᴏ sᴍᴏᴋᴇ, ᴡʜɪᴄʜ ɪs sᴛʀᴏɴɢʟʏ ᴀssᴏᴄɪᴀᴛᴇᴅ ᴡɪᴛʜ ᴀʟʟᴇʀɢɪᴄ sᴇɴsɪᴛɪᴢᴀᴛɪᴏɴ, ᴀsᴛʜᴍᴀ, ᴀɴᴅ ᴏᴛʜᴇʀ ʀᴇsᴘɪʀᴀᴛᴏʀʏ ɪʟʟɴᴇssᴇs. ᴇxᴘᴏsᴜʀᴇ ᴛᴏ sᴍᴏᴋᴇ ʀᴇsᴜʟᴛs ɪɴ ᴛʜᴇ ʙᴏᴅʏ's ᴇɴʜᴀɴᴄᴇᴅ ᴀʙɪʟɪᴛʏ ᴛᴏ ᴘʀᴏᴅᴜᴄᴇ ɪɢᴇ (ᴛʜᴇ ᴀʟʟᴇʀɢʏ ᴀɴᴛɪʙᴏᴅʏ) ᴛʜᴀᴛ ᴀᴛᴛᴀᴄʜᴇs ᴛᴏ ᴀʟʟᴇʀɢᴇɴs (ᴇ.ɢ. ᴘᴏʟʟᴇɴ, ᴅᴜsᴛ ᴍɪᴛᴇs ᴀɴᴅ ᴅᴀɴᴅᴇʀ).