Animals have teeth, too. But animal teeth are not all the same. Beavers have long flat teeth. Their teeth are strong. Beaver teeth are made of iron. Beavers use their teeth to chew through wood.
Photo Credit: mauritius images GmbH/Alamy Stock Photo
In the Know
Nature’s Light Show
Then, they all stop. It’s so dark. You can’t see … read more
In the Know
School Supplies
You will need supplies. You might need crayons. You might … read more
In the Know
The Science of Sledding
A big hill makes sledding more fun. Gravity pulls you … read more