A single layer of cube-like cells that carry out active transport, facilitated diffusion, or secretion. They are found in mitochondria and kidneys. They often have cilia and microvilli on the surface.
credit definition The ability to obtain goods, money, or services in return for a promise to pay at some later date. The New Dictionary of Cultural Literacy, Third Edition
Tax credit. A tax credit is a tax incentive which allows certain taxpayers to subtract the amount of the credit they have accrued from the total they owe the state. It may also be a credit granted in recognition of taxes already paid or, as in the United Kingdom, a form of state support for low earners.