1 名前: 以下、名無しにかわりましてVIPがお送りします 投稿日: 2009/02/25(水) 22:45:56.35 ID:A9oEk0o/0 In spring, the axis of the Earth is tilted toward the Sun and the length of daylight rapidly increases for the relevant hemisphere. The hemisphere begins to warm significantly causing new plant growth to "spring forth," giving the season its name. Snow, if a normal part of winter, begins to melt and streams swell with