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Do you use chemicals in your jod (1 comment)
is there backteria on my desk (1 comment)
how many sound waves have you discovered (1 comment)
How does air resistance keep things up for longer, when gravity is pulling stuff towards the core of the earth? (1 comment)
how big is my cars engine (1 comment)
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Do you use chemicals in your jod (1 comment)
is there backteria on my desk (1 comment)
how many sound waves have you discovered (1 comment)
How does air resistance keep things up for longer, when gravity is pulling stuff towards the core of the earth? (1 comment)
how big is my cars engine (1 comment)