Uploaded May 2013 | Updated September 2026, 2 weeks ago

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**Please note, all worksheets, diagrams, and other science resources can no be found in my free Earth Science app - grab it now at EarthScience.Glideapp.io. How to draw attention to portions of text on a Keynote slide. A simple and powerful trick. Visit my website at MikeSammartano.com to check out recent blog entries, videos, and more, including worksheets to go along with my science videos. Additional science videos and resources at: https://science.glide.page
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