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Health and Family Life
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Pollution
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Age 8-9
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level: 4
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English
Author's Instructions
substances that a harmful to the environment/effects of pollution to the environment/ways to keep the environment clean
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All Classes
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Health and Family Life
-
Pollution
-
Age 8-9
-
level: 4
-
English
Author's Instructions
substances that a harmful to the environment/effects of pollution to the environment/ways to keep the environment clean