Read this: Some manufacturers have started using a new, significantly more environmentally friendly alternative to expanded plastic packaging. Made out of paper, and known commercially as paperfoam, the new packaging has very similar mechanical properties to some expanded plastic packaging, but is biodegradable and can also be recycled with ordinary paper.
Now answer this question, if there is an answer (If it cannot be answered, return "unanswerable"): What is ordinary paper made out of?
unanswerable