[Solved] When saving (the supply of loanable funds) increases as the interest rate increases, an increase in investment demand results in a ______ interest rate and ______ in the quantity of investment. A) higher; no change B) higher; an increase C) lower; no change D) lower; an increase Cleavage: A property of minerals that allows them to break along smooth, flat surfaces, determined by the mineral's crystal structure. Columnar Joints: Natural formations resulting from the cooling and cracking of volcanic rock into nearly hexagonal columns. Finely Crystalline: Describes a rock texture that consists of small, closely-packed crystals not easily visible to the naked eye. Calcite: A common mineral form of calcium carbonate, critical in the formation of limestone and marble, and involved in many geological processes.