The vertical sequence of the layers of soil is called a soil "profile", since each layer is specific to a particular soil type, which can help farmers and scientists determine how to plant crops.
Answer from: Quest
he risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.