Each sector represents a different stage of economic activity as it relates to how closely tied or not that activity is to the extraction of natural resources. For example, primary sector ...

This system, created jointly by Morgan Stanley and Standard & Poor's, sorts companies into sectors based on their primary business ... one particular area of the economy. Investors can also ...

An industry is any economic activity which creates ... Industries in this sector turn raw materials from the primary sector into a manufactured product. Examples of a secondary industry include ...