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ʙᴀᴋɪᴛ ᴋᴜʟᴀʏ ɢʀᴇᴇɴ ᴀɴɢ ʙʟᴀᴄᴋ ʙᴏᴀʀᴅ?
ᴘʟᴇs ᴘᴀ ᴀɴsᴡᴇʀ ᴘᴏ.​


Sagot :

Answer:

kasi pag black yung board

Explanation:

dimo ma kikita yung board Apaka easy charrr

Answer:

The color change came in the 1960s, when companies sold steel plates coated with green porcelain-based enamel instead of the traditional dark slate. The new material was lighter and less fragile than the first blackboards, so they were cheaper to ship and more likely to survive the journey