Your skeleton helps you leap, somersault, and touch your toes-without it, you would be as floppy as a beanbag! There are over 200 bones living and growing inside you that make up …
You are lying in bed listening to the soft sound of rain. It has been coming down for hours. Now something is changing. The rain sounds harder and louder, and there is water …
Germs are all around us, but they're too small to see. Many germs are harmless, but two kinds, viruses and bacteria, can make you sick! How? Read and find out! This classic Level 2 …
The earth-and everything on it-needs water. But lately, it's been unusually sunny, warm, and dry. The weather anchor announces that your area is experiencing a drought! Where do …
