What factors affect the demand for a resource?

One factor that affects the demand for a resource is the cost of it. For example, the price of petrol reduces the demand for it and people will find an alternative an cheaper way of communting instead. Another factor is it's value; gold for example is valuable and very rare therefore is in of high demand for fashion and investment. The importance of a resource affects it demand; oil for example it vital for many forms of energy prodcution due to the amount of substances that can be extracted from it. This increases demand greatly. Another factor is it's ease of use; the demand for coal in LEDCs is higher as it is easier to extract power from compared to uranimum which is requires expenise equipment to use. The level of waste is another factor affecting the demand of a resource; if a substance produces a high level of pollution and dirt such as coal then he demand for this would decrease, but increase for a cleaner energy source such as renewable energy.