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Mir Debby
Is the air quality safe for children to bike to school?
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//www.youtube.com/embed/3_SAyYwXXvE"
Cohen Liad
The Haemoglobin molecule
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Liang Jiexiang
The cause of ocean acidification
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//www.youtube.com/embed/7P94a-9yMQ4"
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Environmental problem
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