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Image Credit
/-/https/www.sciencebuddies.org/cdn/Files/20154/9/crayon-leaf-rubbing.jpg)
Description:
In the completed rubbing, crayon markings are darkest where the leaf's surface was raised, resulting in an image of the leaf's veins.
Source:
Ben Finio, Science Buddies
License:
Science Buddies
/-/https/img.youtube.com/vi/Eg4KbgAoA0o/0.jpg)
/-/https/img.youtube.com/vi/SYJP36RJKPA/0.jpg)
/-/https/img.youtube.com/vi/vo7SbVhW3pE/0.jpg)