Question

Fill in the blanks.
1.______ and _______ are known as material source.​

Answer 1

Answer:

naturally occurring vegetable or animal

I found this on online net

but hope it helps you thank you ☺️

Answer 2

Answer:

1.archives and manuscript material.

2.photographs, audio recordings, video recordings, films.

3.journals, letters and diaries.

4.speeches