The second issue deals with the best way to dispose of outdated or unwanted phones. Components such as heavy metals and tin, used in manufacturing the phones, are not biodegradable and remain in landfills indefinitely.
When you take into consideration that the number of cell phones in the average household exceeds the number of family members, it translates into an enormous amounts of trash taking up precious landfill space.

2. Polyurethane

Polyurethane, along with other plastic products, remains in landfills for thousands of years. This contaminates the land. These materials cannot be safely burned, because the resulting smoke from the fire is toxic.


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