How are restaurants changing for COVID-19?
Restaurants in cities like Denver, Colorado and Chicago, Illinois have a problem. COVID-19 makes dining indoors dangerous.
Photo Credit: ariadna de raadt/Shutterstock
Scientists make observations. Look at the photo of the cactus. … read more
There are different types of electricity. One type is called … read more
Do you like to tell people about yourself? What do … read more
©2017 McGraw-Hill Education. All Rights Reserved.