Do all of your cells get switched out for new ones every seven years or so? Does anything remain with you throughout your entire life?
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Categories: Gr. 11-12 Biology
This is an update to Nehal's Nov 27, 2018 post. The game board required for this resource is now included below. Our apologies to Nehal and all who opened the Nov 27 post for this... read more
Categories: Gr 1-3 Science & Tech, Gr 4-6 Science & Tech, Gr 9-10 Science
https://www.youtube.com/watch?v=wICCOJT0mLc When we are the wrong way up we tend to get headaches, feel dizzy and even faint. Yet bats hang upside down for days, weeks and months at a time without... read more
Categories: Gr 7-8 Science & Tech, Gr 9-10 Science, Gr. 11-12 Chemistry, Gr. 11-12 Physics
https://youtu.be/I4EZCy14te0 Throughout Earth’s history, climate has varied greatly. For hundreds of millions of years, the planet had no polar ice caps. Without this ice, the sea level was 70... read more
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