Answer:
a) Thomas Edison invented a way to record sound
Answer:
D - accomplish all of the above, depending on the purpose of a drawing.
Explanation:
I Got It Right On Edge :)
Organum added a new note to the gregorian chants to enhance harmony
Answer:
Stilus or graphium, splinter of bone, ivory, iron, bronze, or other metal, with the pointed end at one end, adapted for writing on wax tablets. ...
For writing on papyrus or parchment, the Cálamus scriptorius, a sharp instrument made of reed cane and the feather of a bird, was used.
Explanation: