A Christmas card is a greeting card[?] that is decorated in a manner that celebrates the birth of Jesus. Typical decorations might include Christmas trees, Nativity scenes, or other Christian symbols. Christmas cards are exchanged during the Christmas season (around December 25) by many people (including non-Christians) in Western culture and in Japan. Some Christian religions (like the Jehovah's Witnesses), however, disdain the celebration of holidays without explicit Biblical authorization, and so neither celebrate Christmas nor exchange Christmas cards.
... in the form of a carbohydrate such as sugar, with the reaction being driven by ATP and NADPH. This ATP and NADPH is usually produced by the light reaction described ...