
Penguins live right by the water. They usually live where it is cold. Penguins have thick skin with lots of fat under it. The fat keeps them warm.
Photo Credit: Shawn Mahoney
Your breath is warm and moist. It has different gases. … read more
Some lasers can cut through steel. Companies that make parts … read more
Eastern gray squirrels eat nuts and berries. They can find … read more
© 2025 McGraw-Hill Education. All Rights Reserved.