The term 'natural asset' can be broken down into two crossword solutions: RESOURCE (8 letters) and ORE (3 letters). A RESOURCE is a source of supply or support, while ORE is a naturally occurring mineral from which a valuable metal or other useful material can be extracted. Natural assets are materials found in nature that can be used to benefit humans, such as minerals, water, and land. Ores are a type of natural asset that can be mined and processed to extract valuable metals, such as gold, silver, and copper.