History, asked by noahsridhar2007, 9 months ago

Which sources
are included
in material sources?​

Answers

Answered by bzainaba73
5

Answer:

hope it might helps u!!!!

Attachments:
Answered by Anonymous
28

Answer:

There are three 'varieties' of materials :

  • Direct earth derived products, such as metalic ores, and petroleum oil derived products.
  • Indirect earth derived products, such as cotton, paper, hemp, leather.
  • Indirect synthetic products such as nylon, polychlorinated biphenols or PCBs,

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