Beavers: dam builders

Everyone has heard the phrase “busy as a beaver” and this book illustrates the meaning of that expression. Beavers are extremely industrious animals that can change an entire landscape as they cut down trees to build lodges and dams. There are benefits and difficulties in sharing a place with these natural architects. They provide vital wetland homes for countless animals, but near people, their work can cause flooding that harms homes and farms.

còn 1 cuốn