Tissue paper plies and telephone: what they have in common

1. Step 1. Tissue paper plies — is part of — Paper tissues. Two or three layers of thin paper.
2. Step 2. Paper tissues — is made of — Wood pulp. Cellulose.
3. Step 3. Wood pulp — is used in — Paper machine. The raw material.
4. Step 4. Paper machine — is used in — Paper. Industrial production.
5. Step 5. Paper — is material for — Loudspeaker. The cone is paper.
6. Step 6. Loudspeaker — is part of — Telephone. The earpiece reproduces the other person’s voice.

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