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Anolis carolinensis. They are interesting creatures to watch because their body color changes from g...
An improved Newton’s Cradle. It demonstrates conservation of momentum and energy pull back on...
Five larvae shipped in a clear, 8-oz rearing chamber with food. Larvae pupate and emerge as adults i...
Students can watch the sun “tan” the beads and change colors to brilliant pink, oranges,...
Make your Fruits and Vegetables work for you. By inserting the zinc and copper strips into the potat...