
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.
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Scientists look to nature for ideas. This is called biomimicry. … read more
There are many Navajo people in the United States. Many … read more
World Teachers’ Day is in October. Teachers are very important! … read more
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