Earth is covered with water. Most of the water is in oceans. Ocean water is salty. Some water is in lakes and rivers. Most lakes and rivers are not salty. They have fresh water.
Photo Credit: Studio Photogram/Alamy Stock Photo
In the Know
Ruby Bridges Goes to School
In the past, some laws kept Black children from going … read more
In the Know
What Can You Learn with Lenses?
Why does this spider look so big? It is magnified. … read more
In the Know
What Causes It to Happen?
A cause is an event or action. A cause is … read more