科研之友
微信
新浪微博
Facebook
分享链接
摘要
<正>Winter is the last season of the year. The weather gets colder, days get shorter, the leaves turn colors and fall off the trees. We put on warm clothes in winter. But what about animals and plants? We don’t see too many animals in winter. Where are they? How do they spend those cold days? Let’s find out.
