These wooden parts are likely used for construction or carpentry purposes. They could be used as support beams, framing for a structure, or as part of a furniture piece. The specific purpose would depend on the design and dimensions of the wooden parts. **

Wooden parts rot in saltwater due to the presence of microorganisms such as bacteria and fungi that break down the wood's cellulose and lignin. The saltwater provides a suitable environment for these microorganisms to thrive and accelerate the decay process. Additionally, the salt in the water can draw moisture out of the wood, causing it to become more susceptible to decay. Over time, the combination of saltwater, microorganisms, and moisture can lead to the deterioration of wooden parts. **

Yes, it is dangerous to place wooden parts next to a heater. Wood is flammable and can easily catch fire if it is too close to a heat source. The heat from the heater can cause the wood to dry out and become more susceptible to catching fire. It is important to keep wooden items at a safe distance from heaters to prevent the risk of fire. **

The wooden parts that come with a cotton canvas are typically used to create a frame for the canvas. You can assemble the wooden parts to form a sturdy frame and then stretch the canvas over it, securing it with staples or tacks. This creates a smooth and taut surface for painting or other artistic endeavors. Once the canvas is stretched and secured, the wooden frame provides support and structure for the artwork. **