
Another animal that hibernates is the bear. Bears hibernate in caves. Bears use very little energy when they hibernate. They breathe slowly. Their hearts pump slowly. But, if they hear a noise, they will wake up.
Photo Credit: Shaber/Shutterstock
In winter, a sea cave becomes an ice cave! The … read more
The firework goes higher and higher. Chemicals in the firework … read more
What is a territory? What is Thanksgiving like there? This … read more
© 2025 McGraw-Hill Education. All Rights Reserved.