Feb 14 2015

SCIENCE: MY HOME

[youtube]https://www.youtube.com/watch?v=XYz6CkNxz7g[/youtube]

[youtube]https://www.youtube.com/watch?v=zvejRQmmtCE[/youtube]

[youtube]https://www.youtube.com/watch?v=Wb2_wk5fMqs[/youtube]

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