ClassX Video Lessons

Category: Video Lessons

Why do we need blood?

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Could people ever walk on walls?

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Could a kid win a race against a penguin?

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What’s the biggest tree in the world?

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Why is the ocean salty?

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How do batteries work?

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How were emojis created?

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Can trees talk to each other?

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What’s the smallest animal on Earth?

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How do optical illusions trick us?

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