pine.
30 chairs
Kitchen chairs are generally made out of wood. Usually it's made out of oak wood, but it also can be made out of various types of plastics if it is cheaply done.
Plastic
probably pine wood
Yes, well most chairs are made of wood, but some are just made of plastic or metal, but most commonly - wood
Outdoor rocking chairs can indeed be fabricated from wood. However, that is not to say that all outdoor rocking chairs are made of wood, as they also can be made of metal, resin, plastic, or other materials as well.
wood from tree trunks and branches can be made into wood for chairs/tables etc.
Circle chairs tend to be made from hardwood such as oak. You can purchase circle chairs from retailers such as Alibaba, Amazon and Restaurant Chairs Direct.
Some chairs squeak. Chairs are often made of wood and glue. Sometimes the glue cracks and the joints can move a bit. That's when they squeak.
wood technically cane, like on old rocking chairs.
Typically, there are not any minerals found in seats. Most chairs are made of wood. Wood is organic and not a mineral.
No, not all chairs are made of pine..some are. chairs can be made from various materials such as: wood, plastic and metal.