
You push the toy hoop with your hips. At the same time, you spin the hoop around. The motion [change in position] of your body keeps the hoop up.
Some people can keep the hoop up. Others cannot.
Photo Credit: ImageDJ/Alamy Stock Photo
Water bears live where it is wet. Some live in … read more
Winter has begun. Many places find ways to make the … read more
The United States is full of people from different backgrounds. … read more
© 2026 McGraw-Hill Education. All Rights Reserved.