|Product #: SED10565_TQ|
Spaceship Earth (Resource Book Only) eBookGrade 3|Grade 4
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Earth is made up of atmosphere that protects us from the sun and contains our air supply. The next part is the hydrosphere, which is all the water on the planet. The third is the geosphere, the rocks. All three parts are closely connected. If we do not take care of one part of Earth, such as the ocean, we hurt the entire planet. Scientists all over the world are working to find ways to reduce pollution and make our Earth healthier.
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