Into the future this utility from consumption is discounted at some rate ' Ï ' the rate of time preference for a given individual. Higher values for this rate of time preference imply less satisfaction from future consumption relative to current consumption spending.
Waste products are usually excreted by the kidneys. High levels of waste products in the blood may mean that the kidneys are not working as they should.
1. Products made from environmentally friendly materials: The materials used to produce a product and their origin is important in determining if the product is green. If the product contains recycled materials instead of new, raw materials it can be considered a green product.