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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Ciencias naturales
Traveling Birds
Some animals make changes when the seasons change. Squirrels gather … read more
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Inspired by Nature
Scientists look to nature for ideas. This is called biomimicry. … read more
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Fall Fun
Fall is one of the four seasons. In some places, … read more