Chemistry
What can tusks tell us about the lives of mastodons?
+ Curated links to hands-on paleontology activities
+ Background videos on tusk growth and isotope analysis
+ Audio version of article
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+ Curated links to hands-on paleontology activities
+ Background videos on tusk growth and isotope analysis
+ Audio version of article
+ Audio version of article
+ Links to carbon footprint lesson plans
+ Article translated into Bulgarian
