14. The law of diminishing returns states that as a firm use more of a variable resource, given the quantity of fixed resources, marginal product of the firm will eventually decrease.

The round cakes represented the moon, with candles adding light. cakes specifically for birthdays (rather than weddings) originated in  15th century  germany. these single layer cakes were especially popular for first birthdays. in the  18th century  children's birthday parties called kinderfesten became popular.hope this vote me brainiest!