Mark Rober

Mark Rober

SCIENCE CLASS #6- What if Everyone Flushed their Toilet at Once? (2020x9)


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Let's talk about pressure! I WILL DO ONE FINAL CLASS NEXT WEEK, MAY 6TH! Get your first KiwiCo Crate for FREE!!! https://www.kiwico.com/markrober Here is a great link to donate to help with Covid-19 aid- https://tiltify.com/united-way/hopefromhome

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