Birgit.
Plastic toilet seats are made from a type of thermoplastic called polystyrene.
theyre made out of cheap plastics
What are train seats made from?=''Train seats are made from a metal called 'Steel'. It is carved into shape and topped with Plastic so if a body part is bashed against it, it doesn't hurt as much. They are then topped again with material (like bus and car seats!) and they are welded together to make the 2 seats. Tables are made the same way but without the material.''=
The seats in a top end Porsche automobile are made of leather or partial leather. Porsche seats are engineered for comfort and support and are fully adjustable.
carrots
Most boat seats are made of cloth, vinyl or plastic. Since there are many different kinds of boats there are many different kinds of boat seats. Overton's has a website with additional information on boat seats.
All types of love seats are usually made in China from Broyhill furniture company.
toilet seats can be made out of different things. some are made out of wood, steal, clay, metal, or even plastic
foam and rubber
marble
Typically, there are not any minerals found in seats. Most chairs are made of wood. Wood is organic and not a mineral.
I would check the manufacturer of the car seats that you own and see if they are manufactured locally. I would also call the manufacturer up and ask them what they are made of.