Question

2. What are fibres? very short class 7 it's urgent please​

Answer 1

Fiber or fibre is a natural or man-made substance that is significantly longer than it is wide. Fibers are often used in the manufacture of other materials. The strongest engineering materials often incorporate fibers, for example carbon fiber and ultra-high-molecular-weight polyethylene

Answer 2

Answer:

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Fɪʙᴇʀ ᴏʀ ғɪʙʀᴇ ɪs ᴀ ɴᴀᴛᴜʀᴀʟ ᴏʀ ᴍᴀɴ-ᴍᴀᴅᴇ sᴜʙsᴛᴀɴᴄᴇ ᴛʜᴀᴛ ɪs sɪɢɴɪғɪᴄᴀɴᴛʟʏ ʟᴏɴɢᴇʀ ᴛʜᴀɴ ɪᴛ ɪs ᴡɪᴅᴇ. Fɪʙᴇʀs ᴀʀᴇ ᴏғᴛᴇɴ ᴜsᴇᴅ ɪɴ ᴛʜᴇ ᴍᴀɴᴜғᴀᴄᴛᴜʀᴇ ᴏғ ᴏᴛʜᴇʀ ᴍᴀᴛᴇʀɪᴀʟs. Tʜᴇ sᴛʀᴏɴɢᴇsᴛ ᴇɴɢɪɴᴇᴇʀɪɴɢ ᴍᴀᴛᴇʀɪᴀʟs ᴏғᴛᴇɴ ɪɴᴄᴏʀᴘᴏʀᴀᴛᴇ ғɪʙᴇʀs, ғᴏʀ ᴇxᴀᴍᴘʟᴇ ᴄᴀʀʙᴏɴ ғɪʙᴇʀ ᴀɴᴅ ᴜʟᴛʀᴀ-ʜɪɢʜ-ᴍᴏʟᴇᴄᴜʟᴀʀ-ᴡᴇɪɢʜᴛ ᴘᴏʟʏᴇᴛʜʏʟᴇɴᴇ.