Do it yourself (Heinemann Library)
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1)
Composting: decomposition
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3)
Experiments with light: light energy
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5)
Growing plants: plant life processes
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6)
Healthy eating: diet and nutrition
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7)
Keeping fit: body systems
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10)
Saving energy: Earth's resources
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12)
Watching wildlife: animal habitats
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14)
Experiments with sound: explaining sound
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