
This big pile is road salt. It’s not like salt we put on food. Cities put salt on roads before snow falls. Salt keeps ice from forming. Salt can melt new ice, too.
Photo Credit: Burlingham/Shutterstock
On December 1, we honor Rosa Parks. But who was … read more
Candela designed many famous buildings in Mexico. This building is … read more
Many animals help plants in this way. The most common … read more
© 2026 McGraw-Hill Education. All Rights Reserved.